Heh, the Formula 1 cars in the top pictures were part of the display by HP, demonstrating how they used their software and hardware to help F1 teams test and monitor the performance of their race cars. Mercedes Benz had a large floor section b/c they were the official "automotive sponsor" for Comdex. I suppose w/ all the computer technology onboard their cars, it was fitting for them to be on the Comdex floor. I saw signs inviting people to test drive their dream Mercedes Benz, but I didn't get a chance to try that.
I did get to "test drive" the Segway HT, though!