Been driving my fisker for over a year now and I've always been curious what's the way to drive to get the best mileage out of it. When I first bought it I drove it from fully charged to 0 and then in Stealth on gas only. Then I drove in sport mode only from fully charge and it would usually stop using HV with about 25-27 miles left on it and only use gas. Now I drive it in stealth until about 20miles left and then switch to sport mode. I still can't determine which is the most efficient method. Any thoughts?