I have an idea. By putting together oothers' ideas, I have come up with this. The car and tracfk creators would hae to be different. In the car creators, have edit boxes, for steering, top speed, and the sound files associated. You know, like topfreq, idlefreq, and other stuff. For haswipers, this ought to be a checkbox.
The tracfk creator would have to be different again. You could have edit boxes for the numbers again, you know, the type of trackpart, and so on, but there's something else. There would have to be a street aadventure option. This would either be in the form of a checkbox, at the end of s setting up your track, or else, yowhen you opened the track creator, there could be a
"Do you wish this track to be a stret adventure?" dialog, with, of course, a yes, no, and cancel, in case the person decided they didn't want to make a track.
I hope you like these ideas.
Holden