coool.. i was thinking of making a device (i think its already out there) but its based on this LED shifter thing.
What u do is drive to 100 kmph and then set the device.. and that device will record the amount of power pulsing through the car (ciggy lighter or watever)
and then u can reset it so u can time ur 0-100s a little more accurately then hand timing. (of course ull have a switch for watever gear ur gonna be in for 100 kmph.
anyway sorry for going off topic back to dans mr2 :P