Karma boosts 2020 Revero performance with new battery, BMW engine

Karma revealed the first details on its updated Revero extended-range electric sedan on Thursday. Due for a world debut on April 16 at Auto Shanghai 2019, the updated Revero will boast new looks, new tech in the cabin, and improved performance. The latter will be made possible by a completely new powertrain. 2017 Karma Revero …