Who says gas from dino juice is the only way to get a rumble?
Commuter cars and small SUVs will continue to be electrified...but look at the costs. The Volt is 40k, and the nissan leaf is...what, 33? A dinky little car like that with 100 miles to drive...33k. Until price comes down DRASTICALLY...or liquid fuel prices literally skyrocket...they won't take hold. And I'd guess we have decades before that happens.
Then...there's the assumption that we must all be driven by ONE source. If electricity is the source of choice -- unfortunately, the fact is that the grid can't support ALL cars on the road. Not without significant investment in 'smartgrid' technology and nuclear power plants to support the load. So...this means that for the foreseeable future, we will have a diverse portfolio of vehicles. Electrics, bio/diesel, gasoline, Ethanol...
I see no reason to worry about something that's so very far off. Get it out of your head and keep working towards that Camaro!