>>Sales averaged less than 20,000 per year, not enough to sustain the costly undertaking. That to me sounds like a decent number. I guess they were selling them at a loss.
The one part of this that I feel like I understand is that if you buy this vehicle you've effectively signed up for twice the maintenance expense. While I feel this was a brilliant step in the direction of stop gap between gas and electric vehicles; I could never bring myself to pull the trigger.
Then I would challenge your understanding.
That combustion motor 1) is not running anywhere near as much as a normal combustion engine, 2) has no mechanical transmission to go bad and 3) can be tuned for a much narrower range of RPMs than a normal engine.
Removing a mechanical transmission is huge. Everything else is upside.