Why does fuel economy get better on the highway, but EV range gets worse?

Question

Why does fuel economy get better on the highway, but EV range gets worse?

In: 463

Answer 1

The short answer is combustion engines are super inefficient but they are most efficient at highway speeds so they seem like they make good mileage.

All cars have more drag when going faster because of wing resistance but electric motors don’t get more efficient as they go faster like combustion engines.