The new cars look very different than the 2009 cars, the back wing has been practically chopped off. The vent behind the drivers head also seems to have been extended in the McLaren, BMW and the Renault almost to the new back wing. BMW has also seemingly lost all their sponsors, as their car is now black and white. Renault is mainly a Yellow (from light blue to dark blue white and orange to yellow... go figure)
The new designs suck, then again, I hate change.