We've been trawling the floor on the first day of the Frankfurt auto show, and there have been plenty of new model launches and concept-car unveilings to keep us busy. Mercedes-Benz delivered on its promise to take the wraps off a fleet of new cars, including hybrid versions of its C300 wagon and its ML450 SUV, as well as its F700 research vehicle. Volkswagen and BMW also took advantage of being on their home turf, with the latter unveiling its partnership with Google for a local-search-enabled in-dash navigation system, and VW showing off its Up concept, an ultra-compact rear-engined mini-Golf with removable seats. Meanwhile, Fiat's own microcar, the 500, turned out not to be so micro in the flesh.
On the hybrid front, GM showed off its E-Flex-powered Opel Flextreme concept complete with built-in Segways, while Honda displayed a sport-tuned version of its Civic Hybrid that had earned its stripes racing in the 2007 Nurburgring race. Check out our continuing coverage of the show on the new CNET Car Tech blog, here.