I'll do a start button before I go anywhere near anything having to do with KITT (sorry, just not my fave show ever)
I'll keep an eye peeled on eBay for one that I think has the look I like (especially if its illuminated)...as long as it isnt gonna muck up the security system I'm game for adding it on.
get in car
insert key
switch to "on" to arm all toys and gadgets (including start button coming on)
press "start"
T-Bat rumbles to life as it turns around in driveway on turntable
Blast out of driveway to get to work on time.
yeah, that'll work