Uber is teaming up with Toyota to build self-driving cars for its ride-hailing service after its efforts to do it alone were derailed by allegations of theft and a fatal collision.
Toyota is also investing $US500 million ($A682 million) in Uber as part of an alliance announced on Monday.
The deal aims to combine the best features from the two companies' work on autonomous vehicles into cars that will be picking up Uber riders in 2021.
Uber is turning to Toyota for help in autonomous vehicles five months after one of its self-driving cars ran over and killed a pedestrian crossing a dark street in Tempe, Arizona.
Uber's expansion into self-driving cars suffered another setback last year when a Google spin-off accused it of stealing its technology. Uber paid $US245 million to settle that case.
