For legal(ish) driving across a normal drive. So, not the mileage when on the race track doing sprints all day, or the mileage you get in the instant you hit the acceleration going uphill in San Francisco... but when have you seen your car just EAT up power, and how much? It seems like it would be something like in the rain, on a cold day, on the highway... but how bad is it? ( does your "normal" 330 Wh/Mi jump to 600 Wh/Mi? 1000? ) Is there a point where a 200 mile range goes to 100 mile? 50 mile?