It would be a funny way to hide in your own base and defend it from sneaky engineers/scouts, especially on those occasions when you know it's going to happen.
build about 60 jeeps, move them all to one area of the map, and sit in one. "BUT WHICH JEEP CONTAINS THE REAL ME?"
You hide while you actualy drive the jeep; being the passenger alright; but while driving? (Perhaps I didnt make this clear :p)
That would be hilarious. What about a ninja driving the jeep, and a gren as a ninja riding shotgun? Ghost driven jeep of holy ninja-ness? *edit* scout hiding, not ninja for first one.
OFFTOPIC: Sorry krenzo I just fucked up my mantis account again Anyway, models of soldiers in jeep also do the crouching+walking animations when the jeep is moving (at least the driver does), it makes the jeep look like a Flintstones vehicle :/