Fuel efficient cars

This is my first blog about fuel efficient cars. There is some variety among these, but there are 3 types that are the biggest types: 1. Cars with a high MPG (miles per gallon), often known as fuel efficiency or gas mileage; 2. There are electric cars, running completely on electricity; a name for some of these are smart cars; 3. There are hybrid cars, a mix between gas cars and electric cars; I believe they use gas to accelerate as they turn on and to turn on.