Consider what's already happening. Last month, Tesla Motors said it has received more than 325,000 reservations for the Model 3 from customers lining up to pre-order the $35,000 electric car more than a year ahead of when the model is slated to hit the streets. That more-affordable price, by the way, doesn't include a federal tax credit for an EV of up to $7,500. Last year, the average cost of a gasoline car was about $31,000. Tesla's Model 3 will have a range of more than 200 miles. The company expects to have it on the market by 2017.