<human>:  I am researching new types of electric cars, looking to buy one. Can you list me some electric vehicles that are considered the most energy-efficient?
<bot>: Some of the most energy-efficient electric vehicles include the Nissan Leaf, the Chevy Bolt, the Tesla Model S, the BMW i3, the Kia Soul EV, the Volkswagen e-Golf, the Ford Focus Electric, and the Hyundai Ioniq Electric.