Generation 1 Chevy Volt (2011-2015)
https://www.youtube.com/watch?v=dqM3YXEf1js
Good video showing the internal parts.
The Gen 1 is really a very clever design.
Couple of things I really like:
Use of 2 electric motors
Use of "Clutch packs" for engaging or stopping rotating parts vs one way clutches on Fords.
Plus geared final...