The event itself, initially intended for August 8, is said to be a major product announcement for some of Tesla's more ambitious projects, such as the "Cybercab" robotaxi and a po

A Tesla bull warned that next week's "robotaxi" event will be "light on details," despite unveiling not just one but three vehicles.

Tesla plans to design four new versions of its in-house battery to power the Cybertruck, its forthcoming robotaxi and other electric vehicles, the Information reported on Thursday, citing people with knowledge of its plans.