Took my first ever trip in a P90D this weekend (Pgh to Cleveland). The temperature was about 40 degrees, pretty cold. When we arrived we had 30 miles left. I went to a supercharger before the return trip and I was expecting to get about 80% after about 35 minutes based on what the dealer told me a supercharger would do. Unfortunately, at 35 minutes we only had 155 miles (which should have been plenty but it was cold and I didn't want to risk it). It took 1 hour and 10 minutes to get 220 miles. Does this seem abnormal? My wife was sort of upset because she thought we were going to just hit the charger real quick and be on our way. Thanks for any input.