<human>:  Which kind of car is the most fuel efficient?
<bot>: The most fuel efficient type of car is a hybrid, such as the Toyota Prius. It combines a gasoline engine and an electric motor, which helps it achieve excellent fuel economy of up to 50 miles per gallon. Other fuel-efficient cars include electric vehicles, which have driving ranges of around 100 miles, and small cars like the Honda Civic, which can get up to 40 miles per gallon on the highway.