ELR’s exclusive Regen on Demand feature allows the driver to temporarily regenerate energy from the vehicle’s momentum via steering-wheel paddles adapted from traditional performance cars. The electricity is stored in the vehicle's high-voltage propulsion battery for later use. When engaged, Regen on Demand also provides vehicle deceleration that is slightly more than what a typical vehicle experiences while coasting, providing control and dynamic performance characteristics typical to downshifting in a manual-transmission vehicle.To engage Regen on Demand the driver simply takes his or her foot off the accelerator and pulls back on either the left or right steering-wheel paddle to begin regenerating electricity. Releasing the paddle disengages Regen on Demand, allowing the vehicle to coast normally. The driver can engage and disengage Regen on Demand as desired and as traffic conditions allow.