An Uber-owned startup that makes a kit to turn commercial trucks into self-driving vehicles is facing questions this week from the California DMV, after it told authorities that its fleet is not capable of driving by itself.

That differs from what San Francisco-based Otto, which Uber bought for $68 million last August, told the press at last year. Back then, it touted a successful 120-mile beer run through Colorado on its blog, saying a driver was only guiding the truck part of the time.

“By…