PER CURIAM.
      Joshua Dewilfond conditionally  pleaded guilty to conspiracy to distribute a controlled substance and being a  felon in possession of ammunition.  He  appeals the conviction and 200 month sentence, arguing the district court1 erred in denying his motion to suppress because law enforcement violated his  Fourth Amendment rights when he was arrested "based on the warrantless  collection of GPS locational data." The data was collected using a tracking  device installed on a vehicle with the vehicle owner's consent before Dewilfond  borrowed it.  Dewilfond initially argued this issue in a  brief filed under Anders v. California, 386  U.S. 738 (1967).  We denied counsel's  motion to withdraw, treated the Anders  brief as an opening brief on the merits, and requested a responsive brief from  the government.  Reviewing the district  court's legal conclusions de novo and  its factual findings for clear error, we affirm the denial of Dewilfond's  motion to suppress.  United States v. Robinson, 781 F.3d 453, 458 (8th Cir. 2015)  (standard of review).
      Scott County, Iowa, Detective  Greg Hill was the only witness at the June 2021 suppression hearing.  Detective Hill testified that on September  25, 2020, he was investigating methamphetamine distribution in the Quad Cities  area.  A confidential source ("CS"), one  of three sources who had informed Hill that Dewilfond was involved in  distributing methamphetamine, informed Hill that Dewilfond wanted to borrow the  CS's vehicle to purchase a large quantity of methamphetamine outside the Quad  Cities area.  With the CS's consent, law  enforcement placed a GPS tracking device on the vehicle.  Later that day, the CS advised he had loaned  the vehicle to Dewilfond.  Law  enforcement monitored the vehicle's location for the next two days in Davenport  and the surrounding Quad Cities.  On  September 27, the vehicle traveled west to Oskaloosa, Iowa, where it stopped  briefly at a Walmart store and then at two gas stations before returning to  Davenport.  When it arrived at the  Baymont Inn, Hill testified that officers surrounded the vehicle "for a  takedown" and approached its occupants with guns drawn due to Dewilfond's  "history of eluding and the possibility of firearms."
      Dewilfond, in the front passenger  seat, told the driver, his girlfriend, to "go, go, go," but officers stopped  her from putting the vehicle in drive.   Dewilfond initially refused the demand to show his hands.  Both occupants were removed from the vehicle  and arrested.  One officer noted the  vehicle smelled like marijuana.   Detective Hill interviewed Dewilfond after obtaining a Miranda waiver.  Dewilfond said that Hill would find  methamphetamine in the vehicle.  In a  warrantless search of the vehicle later that day, officers found over 1,000  grams of methamphetamine, ammunition, and other contraband.  A subsequent warrant search of Dewilfond's  apartment and a second vehicle recovered additional contraband. 
      Before trial, Dewilfond moved to  suppress all direct evidence and derivative evidence seized as a result of the  "warrantless surveillance of [his] location through use of [GPS]  monitoring."  He argued that the "derivative  evidence" included his involuntary post-Miranda  statements to Detective Hill and the contraband recovered from subsequent  searches of the vehicle, Dewilfond's cell phones, his apartment, and the second  vehicle.  In denying the motion, the  district court concluded that Dewilfond's statements to Detective Hill were not  involuntary and that "any expectation of privacy that Dewilfond had in the  vehicle was eviscerated by [the CS's] consent to the installation of the  GPS."  On appeal, Dewilfond raises a single  issue:  "Whether the district court erred  by denying Mr. Dewilfond's motion to suppress evidence derived from the  warrantless GPS tracking of his movements." Thus, other issues are "not  properly before us."  United States v. LeBeau, 867 F.3d 960, 973  (8th Cir. 2017), citing Fed. R. Crim. P. 12(b)(3), (c)(3); see United States v. Mejia-Perez,  635 F.3d 351, 353-54 (8th Cir. 2011).   
      Dewilfond argues he had a  reasonable expectation of privacy in his location and movements in the borrowed  vehicle, making law enforcement's warrantless surveillance an illegal Fourth  Amendment search.  The argument is based  on United States v. Jones, 565 U.S. 400,  404 (2012), where the Supreme Court held that installation of a GPS tracking device on a suspect's vehicle is a  Fourth Amendment search.  However, Jones while highly relevant does not control  the issue in this case for two distinct reasons.  First, as Dewilfond concedes, the CS  consented to installation of the GPS tracker before Dewilfond borrowed the  vehicle.  In Jones the Court noted that installation of a tracking device in a  container "with the consent of the  original owner . . . when the container is delivered to a buyer having no  knowledge of [its] presence" presents a different question.  Id.  at  409-10 (discussing United States v. Karo, 468 U.S. 705, 712  (1984); emphasis in original).  Second,  Dewilfond challenges the surveillance  of his location using a GPS tracking device, not the device's initial  installation.  The Court in Jones expressly declined "to grapple with the  'vexing problems' [posed by GPS monitoring] where a classic trespassory search  is not involved."  Id. at 412-13 (cleaned up).   We will separately consider these distinctions. 
- Unlike the investigative target in Jones, whose wife owned the vehicle to which law enforcement attached a tracking device while it was parked in public, Dewilfond had no property interest or expectation of privacy in the vehicle when CS consented to installation of a GPS tracking device before Dewilfond borrowed the car. The district court found that the consent was validly given. Consent is a well established exception to the warrant requirement. See Karo, 468 U.S. at 717. Detective Hill's testimony established that CS's consent to install the device included consent for the government to monitor the vehicle's location, at least in public places, to determine if it was engaging in an intended drug purchase, as the CS reported. At that time, Dewilfond had neither a possessory interest in that locational information nor a reasonable expectation of its privacy. Whether CS's consent to install the tracking device would have extended to a warrantless search of the vehicle when the consenting owner was not present is a separate issue we need not address.
- Despite CS's consent, Dewilfond argues, he had a reasonable expectationof privacy in his public movements and location in the borrowed vehicle. We disagree. This contention ignores the well-established Fourth Amendment principle that a person "has a lesser expectation of privacy in a motor vehicle because its function is transportation." Cardwell v. Lewis, 417 U.S. 583, 590 (1974). As the Supreme Court subsequently held in United States v. Knotts, 460 U.S. 276, 281 (1983), "[a] person traveling in an automobile on public thoroughfares has no reasonable expectation of privacy in his movements from one place to another." In this case, as in United States v. Marquez, 605 F.3d 604, 610 (8th Cir. 2010), "[t]he device merely allowed the police to reduce the cost of lawful surveillance" of a vehicle they suspected was involved in drug trafficking. During the entire two days of surveillance, the vehicle remained in public view; thus, use of the GPS tracker "allow[ed] law enforcement to conduct the same sort of surveillance it could conduct visually." Robinson, 781 F.3d at 460 (quotation omitted).
Dewilfond argues this case is controlled by Carpenter v. United States, 138 S. Ct. 2206 (2018), not Knotts. We disagree. At issue in Carpenter was a search of historical cell phone location data stored by third parties, not real-time tracking of a vehicle operating on public roadways. The Court in Carpenter emphasized that its holding was narrow. See id. at 2220 ("We do not express a view on matters not before us [such as] real-time [cell phone location data]."). Here, unlike Carpenter, law enforcement officers with reason to suspect a vehicle was being used for drug trafficking briefly used real-time GPS data "to find [Dewilfond's] location in public, not to peer into the intricacies of his private life." United States v. Hammond, 996 F.3d 374, 389 (7th Cir. 2021), cert. denied, 142 S. Ct. 2646 (2022). This is an independent ground to affirm the district court's decision.
      For these reasons, we conclude the district court properly  denied Dewilfond's motion to suppress because law enforcement in obtaining and  using real-time GPS tracking data with CS's consent in connection with their  investigation of the vehicle's suspected use in drug trafficking did not  violate the Fourth Amendment.  
The judgment of the district court is affirmed.
Endnote:
          1.  The Honorable John A. Jarvey, then Chief Judge of the United States District  Court for the Southern District of Iowa, now retired. 

