When you drive down the strip, it seems like every 4-5 buildings are a car rental lot. You see a lot of Vettes, Prowlers, Ferrari's, Hummers, and Vipers. Would be nice to drive them! But when you see someone on the strip, all you think is reeeeental!
If you are seriously interested, you could look into www.rent-a-vette.com . I was looking a few weeks ago and they have the same vehicles as DCR but at a lower price. At least it is another place to check, plus they seem to have newer vehicles.