I would love to see the a melting pot of cars in CR. There should be a balance of down to earth and cool gadgets in the film (like in FYEO, or even better, LTK, which had some great gadgets that weren't too outlandish.) The Panda could be used for comic relief, which is essential an even the most serious Bond film (people forget that LTK had a lot of funny and comic moments.)
Correctly done, there's nothing wrong with Bond driving a dorkmobile at some point in the movie. The irony of him doing so when he's known for driving the Aston Martin and wearing the nice suits makes for some great humor. Think "glad I insisted you brought that cello!"