Hell no, sorry but I think it's a terrible idea. First because you can use a spam email address and never return to it. And second because selling personal info is something I hate, I really hate.
Another thing is the possibility of dynamic on track advertisements, the walls and barriers could show dynamic non intrusive content about motor and motorsports companies. That's something I wouldn't mind in demo. Lets say with one hour renovation cycle so there is little stress to the bandwidth.