Uber's self-driving cars might not be illegal in California.
Uber is now picking up some passengers in San Francisco using its fleet of self-driving cars.
However, there might be a teeny-tiny problem.
Uber might be breaking the law by doing this.
The California Department of Motor Vehicles wrote a letter to Uber saying it is illegal for the company to operate its self-driving vehicles on public roads until it receives an autonomous vehicle testing permit.
The letter continues saying, any action by Uber to continue the operation of vehicles, equipped with autonomous technology on public streets in California, must cease.
Apparently the California DMV had already warned about the permit issue a month ago.
Uber does not agree with the DMV, the company wrote it's position in a blog post.
Uber said it looked into the permit issue and does not believe the company requires one.
Uber says California's rules apply to cars that can drive without someone controlling them and it's cars are not ready to drive without a person behind the wheel.
20 other companies working on self-driving vehicles have received permits from the state including Tesla, GM and Google.
The California DMV letter also says that if Uber does not confirm immediately letter says, that it will stop its launch and seek a testing permit, DMV will initiate legal action.
For more information, check out CNET.com.
I am Iyaaz Akhtar for you.