In a world where petroleum supplies are shrinking and global temperatures keep inching higher, hybrid electric vehicles (HEVs) are a smart choice.

With both gas and electric motors under the hood, these cars enjoy the best of both worlds.

At low speeds, HEVs can take advantage of the energy-efficient electric motor. Not only are these motors inherently more efficient than their gas-powered counterparts, they can also draw on the energy captured during braking.

When serious power is…