Electric cars with cutting-edge green technology and vehicles remote-controlled by smart phones caught the eye Wednesday at the first Tokyo Motor Show held since Japan's devastating earthquake.

Companies showcased concept cars with "transformable" bodies and automotive computers linked to smart phones, while showing off energy-efficient vehicles with electric, fuel cell and hybrid engines.

Toyota's president unveiled a 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.

Toyota Motor Corp. will also be showing an electric vehicle, set for launch next year, and a tiny version of the hit Prius gas-electric hybrid at the Tokyo Motor Show, which opens to the public this weekend.

Japanese auto giants Toyota and Mitsubishi Motor have said they will resume production in Thailand after the country's flood disaster closed factories for more than a month.

Toyota said it would resume production from November 21 at its three Thai plants, which were forced to halt operations on October 10.

Leading automaker Toyota said Saturday it plans to start producing vehicles with Chinese-made hybrid systems by 2015, after it finishes building a research centre in the country.

The energy-saving vehicles would be made and sold in China through Toyota's joint ventures with Guangzhou Automobile Group and FAW Group Corporation, the Japanese firm said in a statement.

Toyota's electric-gasoline hybrid car technology will be utilized to help ease power shortages in Japan's disaster-struck northeast, part of a set of measures the automaker hopes will underline its commitment to the region.

Toyota Motor Corp. said Tuesday it will donate emergency power supply systems linked to its Prius hybrid cars to prefectures (states) in the Tohoku region ravaged by the March 11 earthquake and tsunami.

Toyota said it would resume partial production of car parts at seven plants in Japan on Thursday, after suspending all factories following the nation's biggest ever earthquake.

The plants will first begin making replacement parts for the domestic market, and on Monday restart production of parts to supply to its overseas factories.