- Hybrid technology concept is provenAccodring to the Wiki, the Prius US sales were as follows for the first 4 years. The Volt's 2012 total could outsell prius' 2003, it's 4th year in US. And remember, the Prius came out in Japan in 1997, so it had a history to help sales in US when it was introduced here. A running start so to speak. Over 30k sold before it hit the shores of the US.
- Batteries are new, expensive and life is uncertain.
Volt's released in an atmosphere where the hybrid tech is proven and more advanced, but still has expensive, unproven batteries so a comparison with Gen 1 is much more reasonable than Gen 0.