In this case the SUPER is just not super at all. Had you got WINACAR.COM then I'd be congratulating you on a fine domain.
The reason is that I know of lots of companies/orgs/shows etc that give away a car as a prize, however I donโt know many that give away SUPER cars.
That said, it is possible that you could hold the domain and get lucky when someone decides to give away a supercar, I wouldnโt hold my breath though.
Your best bet would be to pitch it to the owner of the .NET or the .org.uk, which our both developed domains of sorts.
Value - restricted by the somewhat limited resell opportunities, low X to XX for now, however find the right buyer (the difficult part) and you could ask considerably more.
Jason...