Defendant's conviction for being a felon in possession of a firearm is affirmed, where the district court properly denied his motion to suppress various statements he made to the police and evidence recovered from his home, because: 1) it was reasonable for the officers, who had observed the illegible tags, to stop defendant's vehicle; and 2) in response to defendant's proffer of information, the detective's question "what do you mean?," did not constitute an unwarned custodial interrogation in violation of defendant's Miranda rights.