If a gun is "found in the car [the defendant] was driving, the car was used to commit the drug crime, and drugs were found in the car" then there exists a "temporal and spatial relationship" between the defendant, the drugs, and the gun. United States v. Mendoza-Mesa, No. 02-4039, (8th Cir., Oct. 8, 2004) (applying U.S.S.G. § 2D1.1(b)).
This case definately satifies my, "Well, it seems like an easy issue that never should have even been argued, but if a CTA publishes an opinion on it, then it's important enough for me to read and blog about" test.