Comment by Merad

> Toyota-style hybrid drives could be a lot lighter

The hybrid electric motor in a Toyota is already pretty comparable in weight to the motor in TFA, but obviously much less powerful. You can see the main hybrid motor of a RAV4 at [0]. If memory serves both the Camry and RAV4 hybrid models are only 2-300 lbs heavier than their gas counterparts.

0: https://youtu.be/O61WihMRdjM?t=120