It's called 'Grand Prix'.
More info
here. (Scroll down a bit ....)
And some more info
here
Seems you still can buy the whole Wizard collection:
http://www.wizardgames.com/front.html
[Edit]
Hold on, I must have the sharewareversion somewhere .......
[Editē]
Indeed, here is the sharewareversion:
gp.zip - 0.09MB
I expect some beers and a big fat cigar now.