It's getting down to the wire. This Friday will be your last chance to vote for the CNET Tech Car of the Year. Will the Mercedes-Benz S550 sway you with its night vision, or will the Lexus LS 460L's self-parking win you over? Or maybe you prefer the less ostentatious but oh-so-green Toyota Camry Hybrid? Or the blue and white roundel of the twin turbo BMW 335i? Check out the cars and place your vote. We also have nonvoting subcategories for Best Audio System, Best Navigation System, and Best Communicator, this last subcategory covering cars that respond when you talk to them.