At different times I have mentioned using a gen-set trailer or electrifying roadways other solutions are replacing batteries (a la Better Place) or making new friends [as already has been done on some remarkably long EV road trips.] The Volt puts the gen-set in the vehicle, fuel cells want to give you a hybrid hydrogen/electric car and then there are even commercial solar cars … all of which are available with existing technology. Cyclists turn the question around and add hybrid electric to their leg power. What are you waiting for?
Sally did you post your response under the intended question?