The world's largest car maker and the world's biggest ride-hailing company plan to team up on autonomous driving as technological changes sweep through the transportation industry.

On Thursday, Dara Khosrowshahi, chief executive officer of Uber Technologies Inc., posted a photo on Twitter of him and Toyota Motor Corp. President Akio Toyoda, along with Executive Vice President Shigeki Tomoyama at the automaker's headquarters. The Uber CEO is smiling and holding a black baseball bat from local hero Ichiro Suzuki, while Toyoda laughs at his side.

"Having fun with Akio-San and Tomoyama-San @ToyotaMotorCorpHQ," he wrote. "Great discussions about growing our #autonomous partnership and lessons 4 me in building a great culture. And yep, those are Ichiro's bats."