Tesla has updated its software after researchers from China hacked into the operating system of its electric cars.
The team from Keen Security Lab remotely manipulated the brake system on a Tesla while it was on the move, from a distance of 12 miles (19km).
Using a laptop, the hackers also managed to open a car door without using a key.
Tesla has updated its software to prevent anyone else from manipulating its cars.
The hack took place after months of research and the team from Keen Security Lab posted a video of their efforts earlier this week on YouTube.
During the experiment a hacker took control of a vehicle from the passenger seat, while someone else was behind the wheel.
Using a laptop, he was able to adjust the rear-view mirror while the driver was changing lanes. The hacker also managed to open the trunk remotely, while the car was on the move.
Copyright: BBC Technology http://www.bbc.co.uk/news/technology-37426442