Years ago, my buddy bought a used 5.0 Mustang with a totally loaded alarm system. The keyfob was the size of a pager. He could start the car, roll down/up the windows, raise/lower the convertible top etc. etc.
Several of us were walking out to the parking lot, and he said "watch this." Mind you, the car was a 5 speed. (The in gear safety-clutch-start switch had been bypassed.)
He started the car, and he had left it in gear. It took off across the parking lot, and rammed into another car broadside.... it gets better:
The doors were automatically locked by the alarm since the car was in motion as an anti-carjacking device. He had to run along side the car, and try and get the door key in the door to manually unlock the door-- which now equals several 8 inch long scratches down the side of the car... it gets BETTER.
The Mustang smacks the parked car, and when it comes to a stop the engine dies. The remote start is programed to RESTART the car as if it dies during a cold start. The Mustang starts up again, and starts inch-ramming the car it hit, across the parking lot... boom-boom-boom-boom-boom.
The whole thing took place over about 30 seconds, but it was a portion of my life I will NEVER forget. The 4 of us that witnessed the event were literally rolling on the ground peeing ourselves out of laughter.
Oh yeah, this took base on a military base too. Imagine explaining THAT to the MPs.
Being 19 was great.