I've never done it because they took the vehicle. Where's the poll that asks if someone else has done it to you? Because I'm all over that one. Every single time some guy rages and proceeds freeze me in place until he's out of ammo. Congratulations teammates! You wasted both our time, and you froze me in place long enough for the enemy to kill me. Now you wasted the whole teams time.
Honestly, killing your teammate just because they took a vehicle you wanted is the most asinine thing I've ever heard.
Yet it happens all time. Kind of stupid of 343 if you ask me though. Remove friendly, but leave it on for vehicles so that you can run over teammates and they can blow you up/EMP you. Well that was 1 step forward, 2 step back.