Shelby Cobra, fuel cost.

Click tip: Canadian tinkerers have electrified a 427 Shelby Cobra using a rear-wheel-drive motor of a Tesla Model S P85 and a Kia Soul EV battery pack. The goal is to hit the track, which the team plans on doing later this year.
electrek.co, youtube.com (video)

Reading tip: Market-research company MaritzCX has identified at what point people in the U.S. consider buying a hybrid or electric car to save fuel costs. 3 dollars per gallon seems to be the magic number. Anything below that is (or could be) bad for electric car sales.
wardsauto.com