The Karma Revero bows out of production, yet the EREV sedan’s aluminum spaceframe roots will continue in its successor ...

Under the skin, the Karma had a 2.0-liter Ecotec engine paired to a mild-hybrid system that yielded 52 miles per gallon.

Some things just won't die. Maybe, in about 5 billion years, when the sun grows into a red giant and consumes the solar system, the amazingly persistent Karma Revero will finally end production. But ...