He should have just driven a Volt. You plug it in at night and in the morning you have 40 miles of electric range every day. If you need to go farther, like to Edinburgh, it automatically switches to gasoline after 40 miles and will take you far on its 340 mile gas tank.
Using such a car would allow you to drive 90% of your miles on electricity and still never have to worry about range anxiety or stopping at charging stations.