"Although these promises have proven false time and time again, Tesla and Musk have continued making them to generate media attention, to deceive consumers into believing it has unrivalled cutting-edge technology, and to establish itself as a leading player in the fast-growing electric-vehicle market," Briggs A Matsko, a resident of Rancho Murieta, said in the proposed class action, filed on Wednesday (Sep 14) in San Francisco federal court.