[blhack]

Some cars, like the Chevrolet Corvette, have had HUDs built into the dash/windscreen for over 10 years now. They're /really/ cool.

Speedo/tach/fuel get overlayed on the bottom of the windshield while you're driving.

[huhtenberg]

BMW, Audi, Merc have them too and while they are indeed very cool, it's an option that costs several thousand and that also requires a special windshield glass (making replacing it more costly).