Contrary to Oregon leader's opinion you do not need an attendant to refill your gas vehicle.   Tell me how I make a trip from Seattle to San Fran stopping every 170 miles, waiting 30 minutes to recharge?   I have had to make such a trip.   Remember that 30 minute recharge is not a full recharge.   Then there is the fact that you may or may not get the full 170 out of that recharge.