It seems that you are preoccupied with that "what if I ever wanted to" situation. In that case scenario it seems that the Chevy Volt or BMW i3 is what you want. Drive solely on electricity for next to no cost and then on those very rare days that you drive more than 80 kms it turns on it's gasoline engine to run the car. 
There are some people that look for solutions, and then others that look for problems........