Tesla (Nikola, not the car company) made induction motors over 100 years ago. They have nothing to do with IGBT's, which have been around for over 20 years them

Tesla (Nikola, not the car company) made induction motors over 100 years ago. They have nothing to do with IGBT's, which have been around for over 20 years themselves. Basically it was increased battery life/power to weight ratio and the development of easy charging. The impetus was really more of a technology application than an underlying technology itself.