This may seem like a stupid question, but when the Volt is in D or L, does it creep forward even uphill? Living here in the flatlands, we don't have many hills. But I was on a upward sloping driveway the other day that surely would have held my ICE vehicle stationary in D, but the Volt continued to creep uphill at its normal 3mph. I know the Volt transaxle is designed to imitate "normal" cars, but after watching the professor's video I realized it's totally different.