granted his consent to search and questioned why the form was necessary. Lyman replied that “they’d like to have it in writing.” Arango then asked what would happen if he signed the form and Lyman replied that they would search the bed of the pick-up and if they did not find anything, “you’ll be on your way in fifteen minutes. If we find something, we’ll go from there.” Lyman also told Arango that if he did not sign the form, he would request a search warrant.
Arango signed the form, and several troopers then assisted Hillin and Johnson in dismantling the bed of the truck. The troopers found 100 kilograms of cocaine hidden in secret compartments underneath the bed in the four corners of the truck. Arango testified that he inferred from Lyman’s comments that a judge would sign the form if he did not, that he did not feel he was free to leave, that no one explained his constitutional rights to him, that he was unfamiliar with his rights because he is a citizen of Colombia, and that he never would have signed the form had he known that the search of the truck included dismantling it.
Arango admitted at the suppression hearing that he had not told the truth when he told Hillin that he received the truck from the registered owners. Arango stated that he actually received the truck from a person known as Jesus Gonzalez, who paid Arango $2000 to drive the truck to Denver. Arango presented no evidence at the suppression hearing showing that Gonzalez had lawful possession of the truck from the registered owners. Arango testified that Gonzalez told him that there was money hidden in a secret compartment somewhere in the truck. Arango denied any knowledge of the cocaine.
In response to the government’s argument that Arango lacked standing to contest the search, the district court observed: “There is some genuine question as to whether the defendant Jorge Enrique Ar-ango has standing to challenge the search of the truck.” The district court, however, found it unnecessary to resolve this issue, concluding that even if Arango had standing, he had'consented to the search. Accordingly, the district court denied Aran-go’s motion to suppress evidence of the cocaine. On April 10 and 11, the government tried Arango before a jury, which returned a guilty verdict.
II.
When reviewing a district court’s denial of a motion to suppress, we accept the district court’s factual findings unless they are clearly erroneous. United States v. Berryhill, 880 F.2d 275, 280 (10th Cir.1989). The ultimate determination of reasonableness under the fourth amendment, U.S. Const, amend. IV, is a question of law, which we review de novo. United States v. McKinnel, 888 F.2d 669, 672 (10th Cir.1989).
Arango argues that the district court erred in denying his motion to suppress for the following reasons: (1) he has standing to contest the search; (2) his allegedly illegal detention on Interstate 70 fatally tainted his subsequent oral consent to search; (3) his allegedly illegal arrest and transportation to the sheriff’s office fatally tainted his subsequent written consent; and (4) his written consent to search was invalid on its face.
Arango argues that he has standing to contest the search of the truck because the government failed to introduce any evidence demonstrating that Arango’s possession of the truck was not lawful. Arango contends that his mere physical possession of the truck at the time of the search gives him standing to object to the search. We disagree.
In
Rakas v. Illinois, 439 U.S. 128, 99 S.Ct. 421, 58 L.Ed.2d 387 (1978), the Supreme Court reformulated the issue of standing under the fourth amendment.
Rakas concluded that the “Court’s long history of insistence that Fourth Amendment rights are personal in nature has already answered many ... traditional standing inquiries, and we think that the definition of those rights is more properly placed within the purview of substantive Fourth Amendment law rather than within