I just got back from a run from Los Gatos to Monterey over a steep, windy highway pass, HWY 17 (few miles from sea level, not even up in the Sierras) The car averaged 53 MPG on the trip but showed some annoying traits in the steep stuff - Steep uphills - not that good. We had 3 people in the car. The engine revs up a lot, but the power feels inadequate. What do you folks do, just floor the pedal? Good thing these steep stretches were not really long. Don't think I would enjoy driving this car on extended, steep uphill grades. Stuffing the throttle would just lower MPG's. Steep downhills - foot off gas, the car accelerates a lot on it's own, too much IMO. These downhills are short, so 'B' mode doesn't seem feasible. So, must brake quite a bit. I would rate the Gen2's road going prowess as 'OK' under these conditions. Not very good, nor great. I hope the GenIII is much better in steep terrain. I bet a lot of folks here don't have hills anywhere nearby.