I dunno, but if your empeg crashed while you were driving...... you'd be rolling at 60 mph with your speedometer reading 0 mph so (just guessing here) the car cuts the gas because it thinks your stopped etc etc etc.

Or, if you could tweak the pulse speed on the empeg itself WHILE driving. Crank it up a notch to tell the car you're going faster and need more gas so you can get a boost......... or something. I know nothing about cars, haha.