Besides, most people probably won't need a 150 miles charge most of the time. If you're going back home and need just an extra 30 miles to be safe, that won't take long.
TL;DR Its not the local/commuter crowd they are catering too.
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Edit: Locations - Only the LA and Fremont are even somewhat near major metros.
SF/SValley to Tahoe = 1x (Fremont)
SF LA corridor = 3x+1 (harris ranch, tejon ranch, gilroy, LA)
LA to Vegas Corridor = 1x (barstow)
SF-Tahoe-via Fremont seems the most likely actual drive for the target audience. Its only 1 of 6 locations.
The one problem I see is if you could actually get enough power to a place like this the size of a parking lot.
Bigger problem is you can't take the PCH with your sweet car =/
(and that's probably even a bit slow for I5)
...like horsepower vs torque ! :D
I just spotted a free electric car charging spot at a drugstore in Seattle (Wallgreen's on Market st. in Ballard). It made me feel like I was in the future.