Plus, and maybe it's just me but if a person is willing to buy a $33,000 car and a roughly $2,200 charging station (which you need since it takes 16hrs to charge over a normal 110V socket) I don't think money is their primary concern. Especially when it's a car with such significant limits (can't go faster than 85mph and can't go further than 100 miles)
It's been said that the best range extender for an electric car is a rental car. The net present value of two weeks' car rental per year, forever, is probably less than the $10,000 difference between the Volt and the Leaf.
The Volt will also require regular oil changes and other engine maintenance. About the only regular maintenance for a pure EV is putting air in the tires.
http://www.treehugger.com/files/2010/02/hertz-car-rental-nis...
This is a good move, because a quick test-drive won't be enough to truly determine if an electric car would work for your lifestyle.
For a new type of vehicle like the Leef, it would be an even better idea.
It's an electric motor, avionics (car-ionics?) and other things, not many moving parts. If you are truly paranoid about having "an engine breakdown" the motors are small enough that you can carry a spare. :)