Concept cars at the Japan Auto Show 2011

  

A model poses by Suzuki Motor Corp.'s concept car "Q-Concept" during the press preview of Tokyo Motor Show in Tokyo Wednesday, Nov. 30, 2011. The Tokyo Motor Show opens to the public this weekend.(AP Photo/Itsuo Inouye)

 Honda Motor Company President Takanobu Ito speaks next to the company's electric Micro Commuter Concept city vehicle during a news conference at the 42nd Tokyo Motor Show in Tokyo November 30, 2011. REUTERS/Toru Hanai (JAPAN - Tags: TRANSPORT BUSINESS SCIENCE TECHNOLOGY)

BMW's i8 Concept car is seen at the 42nd Tokyo Motor Show in Tokyo November 30, 2011. REUTERS/Toru Hanai (JAPAN - Tags: TRANSPORT BUSINESS SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY)

Fuji Heavy Industries Ltd's Subaru Advanced Tourer Concept car is seen on display at the 42nd Tokyo Motor Show in Tokyo November 30, 2011. REUTERS/Toru Hanai (JAPAN - Tags: TRANSPORT BUSINESS SCIENCE TECHNOLOGY)

 

Toyota Boshoku Corp.'s concept vehicle T-Brain is displayed during the press preview of Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. The Tokyo Motor Show opens to the public this weekend. (AP Photo/Itsuo Inouye)

A presenter explains about Toyota Fun-Vii in Tokyo Monday, Nov. 28, 2011. Toyota Motor Corp. unveiled the futuristic concept car resembling a giant smartphone to demonstrate how Japan's top automaker is trying to take the lead in technology at the upcoming Tokyo auto show, which opens to the public this weekend. (AP Photo/Koji Sasahara)

A model sits on Suzuki Motor Corp.,'s concept car "Q-Concept" during the press preview of Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. The Tokyo Motor Show opens to the public this weekend. (AP Photo/Koji Sasahara)

Toyota Motor Corp. President Akio Toyoda, left, shakes hands with Yamaha Motor Cor. President Hiroyuki Yanagi as they unveil next-generation vehicles, the electric commuter bike EC-Miu, right, and the electrically power assisted bicycle PAS WITH, the two companies are jointly developing during a press event in Tokyo Monday, Nov. 28, 2011. A vehicle seen in the background is Toyota's futuristic concept vehicle Fun-Vii. (AP Photo/Koji Sasahara)

 Honda Motor Co. President Takanobu Ito stands near Honda's human-shaped robot "Asimo" at a press conference during the press preview of Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. The Tokyo Motor Show opens to the public this weekend. (AP Photo/Koji Sasahara)

A visitor snaps Daihatsu Motor Co., concept car "FC SHO CASE" on displays during the Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. (AP Photo/Koji Sasahara)

A video cameraman shoots Daihatsu Motor Co., concept car "PICO" on display at the Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. (AP Photo/Koji Sasahara)

 A model poses by Toray's concept Electric Vehicle (EV) "TEEWAVE AR1" at the Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. (AP Photo/Koji Sasahara)

Honda Motor Co. President Takanobu Ito speaks near the company's concept model "RC-E" at the press conference during the press preview of Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. The Tokyo Motor Show opens to the public this weekend. (AP Photo/Koji Sasahara)

CORRECTS TO THE 42ND TOKYO MOTOR SHOW - Nissan Motor Co. President and Chief Executive Carlos Ghosn poses with the company's concept car "PIVO3" during the 42nd Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. (AP Photo/Itsuo Inouye)

Toyota Boshoku Co.'s concept vehicle T-Brain is displayed at the Tokyo Motor Show in Tokyo, Japan, Wednesday, Nov. 30, 2011. (AP Photo/Itsuo Inouye)

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