I also think you've correctly identified the cost issue. For employers it's going to be the cost of installing a 240 Volt charger. One charger will be at least $1000, and that's a lot to ask if only one or two people are going to use it. They're much more likely to offer 120V charging which, frankly, should be good enough in most cases. In an hour you'll get 5 extra miles. Plus I'd rather charge at 120V and not have to worry about moving in order to let someone else in the spot after charging is complete. (You can't unplug the Volt without setting off an alarm if the car is locked).