A Tesla Model X prototype is caught driving on a California highway, and it might be testing a lane-keep-assist system. Of course, we can only guess because company CEO Elon Musk is guarding the ...

A new prototype sighting indicates that Tesla might surprise us with a new front design inspired by the Model S/X. The latest encounter also confirms the rear light bar that was previously rumored.

Well, soon, anyway. Tesla's autosteer might be the tech that's keeping this Model X prototype on the road, if you'd like to (maybe) see it in action.

This prototype is particularly interesting because it could be the new Performance variant. Several spy videos shared to X show the new Model Y under wraps with a Tesla engineer behind the wheel.