Valence president Stephan Godevais said the concept vehicle is powered by a Valence U-Charge system, which is based on technology that replaces toxic heavy metals with phosphates, resulting in greater chemical stability, compared with oxide-based Li-ion batteries, and higher energy density. He said the vehicle “allows significant amounts of zero-emission driving,” and boasts fuel efficiency as high as 180 miles per gallon for an average commute of 50 miles to 60 miles per day.