The reality of current self-driving systems doesn't match up with consumers' expectations, he said. "What we've done is we've misled the public into thinking this car is going to be like a human brain to be able to really figure out new things and say, 'Here's something I hadn't seen before, but I know what's going on here, and here's how I should handle it,' " Wozniak said. "A human can do that." His statements come as more automakers and governments are beginning to predict that artifcial intelligence (AI) and self-driving cars might take longer to become reality, in the wake of fatal accidents by "autopilot" cars that have shown the complexity of the technology. Component manufacturers and venture companies working on the technology are revising their timeline for AI deployment significantly, Toyota's Executive Vice-President Shigeki Tomoyama said at the Tokyo motor show.

Toyota Motor Corp., Asia's biggest carmaker, is preparing for a potential future where people don't buy cars. That's behind the hefty investments the company has made in ride-hailing providers, most prominently the $1 billion it poured into Southeast Asian leader Grab. Toyota sees the partnership as an opportunity to get Grab to buy more of its cars and push services like insurance and maintenance, said Shigeki Tomoyama, the global head of Toyota's connected car division, in an interview this month in Nagoya. The pact with Singapore-based Grab forms the Asia prong of Toyota's strategy to tie up with the strongest ride-hailing companies in each region, and then integrate its hardware and software into their services. Toyota is seeking an edge over rivals as carmakers position for an uncertain future in which automated driving and the sharing economy threaten to displace the traditional model of vehicle ownership.

Amid heated global competition over developing next-generation cars such as self-driving automobiles and electric vehicles, Toyota Motor Corp. unveiled Tuesday a new sports car brand inspired by its expertise in motor sports. Under the brand name GR, which comes from Toyota's motor sports brand Toyota Gazoo Racing, the auto giant unveiled seven cars remodeled as sports editions, including the Vitz compact, Voxy and Noah minivans, and the Prius and Mark X sedans. They hit Toyota's retail outlets Tuesday. The main target of the new brand is younger customers, who are often said to have lost their passion for driving their own cars, Gazoo Racing President Shigeki Tomoyama said. "What constitutes the heart of the Gazoo brand is a desire for challenges to make innovations by breaking through barriers existing inside Toyota and set by Toyota," Tomoyama, who heads Toyota's in-house company launched in April, said at carmaker's Mega Web showroom in Tokyo's Odaiba waterfront area, adding that the company also plans to sell GR-branded cars in the European Union.