This morning I decided to try something a little different on my commute to work. Normally I leave my car in Insane Mode with Range Mode Off. I figured if I just drive normally what difference would it make? The answer ended up being, quite a bit! My guess is that the difference really is Range Mode but on my short commute to work (~14 miles) I usually use about 20-22 miles of range, today I only used 16 miles of range and actually drove a little more aggressively than normal (had to put some distance on a tailgater) Tomorrow I will leave Range Mode on but turn Insane Mode back on just to see. Finally, today is the first time I have actually really accelerated hard without Insane Mode on, it's still 'Crazy Fast'!!! I love this car!!