So in PS1, could you swipe an enemy faction's unattended vehicle? I remember in the early days of BF2 you could approach new enemy tank drivers while holding a medkit, they'd think it was C4 so they'd hop out quickly to try to kill you, you could then take the now-unoccupied tank and make off with it (killing the poor SOB you just tricked into giving it to you first, of course, although sometimes it was more satisfying to make him hoof it back to base instead...yes, I am a bastard
).