Originally Posted by Mediacritic
My guess is maybe the large amount of oil the engine uses holds the heat longer than most. Possibly.
That is a very good point mediacritic. Along with that is the layer of insulation on the hood which keeps the heat inside the engine compartment from radiating off the hood.
For all the complaints about rear vision in the Xfire, they do have a lot of glass, so some solar heating could occur in the daytime.
Above all these possibilities is the very real cause of the car's warmth.

These cars are hot!
roadster with a stick