Spycam: 2010 Porsche Cayenne:

Porsche has been hard at work developing the latest iteration of its money-making Cayenne SUV and the new version has been spotted by our spy photographers once again -- this time testing at the Nurburgring wearing barely any camouflage.

Although it looks very similar to the current Cayenne thanks to Porsche's evolutionary approach to redesigns, the second-generation model is said to be smaller, lighter and more fuel-efficient. Our spy photographer also points out that this new Cayenne handled corners with greater ease than its predecessor, so some chassis tinkering is likely afoot as well.