I was going to say 818R, let the racers help fine tune any issues and details so those of us who want the road car will have an easier time, but I read Phyrra's comment and I have to agree that you have to watch out for that. Part of the goal of the 818 has also been that $15k target. If you show a $35k track car, get everyone excited about it, then show the $15k car it might hurt.

In the software industry you can always add features, but if you remove them, you're in for a world of hurt.

In the end I have to say that you should show the street car, then show the race version after. No one will be disappointed in the street car, and the race one will allow you to do a whole other round of "press" (where the street car probably won't be worth that much press once the race car is out).

Seems to me that you're going to have the happiest customers, and the best marketing push if you release the $15k car first, and the race version second.

Just my 2 cents.