I drive a Volt and also BMW's ActiveE. The ActiveE's speedometer style "Charge-Ready-Discharge" dial is extreemly useful in maximizing regenerative braking. By watching that dial in conjunction with the accelerator I can increase my range from 3 to 3.5 and even 4 miles per KWh. The Volt's Green Ball simply spins in the middle of the dial and only moves down in a sudden stop or up if you "stomp" on the accererator. I would strongly recommend the Green Ball be reprogrammed to provide the driver with a "live-time" indication of whether the driver's accelerator use is charging or discharging the battery like my ActiveE does. In stop-and-go Manhattan traffic I can tell from this ActiveE "regen" dial that there's virtually NO battery depletion if I accelerate and slow-down correctly. I think my Volt would act the same way IF i had this kind of information - not merely a floating Green Ball! My wife and I love the Volt and really want to see it succeed AND improve!