I was wondering exactly the same thing. How about the grey/red Audi LMP livery and Peugeot LMP like the ones in the pro race set. To satisfy all the complaints, put full sized front wheels on them and they'd sell like hot cakes. Another option would be to make a series of Nascar trucks. Lots of liveries and they would probably sell well in North America. Nobody else makes these so they could be a class to themselves. I have a Nascar, and have ordered the Porsche. I really like the feel of the Pro cars on our routed tracks. Bring 'em on! Keep them coming! How about a pro chassis for the Gurney and Savage Barracudas?