UPS buys stake in TuSimple, testing self-driving trucks in Arizona

DETROIT (Reuters) - UPS said on Thursday it has bought a minority stake in self-driving company TuSimple, and the world's largest package delivery company has been testing the startup's autonomous trucks since May on a busy freight route in Arizona.The investment by UPS Ventures, the venture capital arm of United Parcel Service Inc , underscores bets that autonomous vehicle technology can expand more rapidly in commercial vehicles than in robotaxis. It could take years to test and develop..