When I watched the video below I decided to see if I could draw from sitting in my car as fast as the guy in the video did, especially considering that he appears to draw from right-side, on-body carry which mimics my own carry method. I left my seatbelt on in order to be realistic. Since it is winter I wore my jacket and found that it seriously inhibited my ability to get to my gun even when unzipped. I also found that I was sitting on the tail of my shirt which further inhibited my draw. I now take my jacket off once I enter my vehicle, and make sure I pull the tail of my shirt out from under my arse so it isn't pinned to the seat. Much better!