Econo-hole

The person driving too slow on the freeway or around town in their hybrid or electric vehicle to see how much MPG they can get, regardless of how annoying they can be.

"This asshole in front of me in the Priuth is literally going 55 on the freeway, holding us up just because (he/she) wants to get another mile out of a gallon of gas, typical econo-hole!" "At least he/she has the required LGBTQRST, Obama, Hillary, Bernie, Hillary, and coexist, lib-cuck stickers so we know in advance and can steer clear"