[adric22]

The Volt does not need supercharger technology. The Volt has a range extender engine that eliminates the need for rapid charging on long trips.

Supercharger technology is appropriate for BEV's but not needed for EREV's.

I agree that it is not needed on a PHEV and I probably wouldn't purchase that option on a PHEV. However, there are at least two PHEVs on the market now that support DC fast charge. The BMW i3 Rex and the Mitsubishi Outlander PHEV.