Backing up was not important. It is important to prepare to defend. You made one mistake. You left you pocket gun in your pocket and then strapped in. I carry a Remington 380 in my back posket in a holster. When I am going into a car, whether driving or not I take the holstered gun out of my pocket and place it where I can quickly reach it if need be. That will protect you more than backing up. If the guy was intending to shoot at you, he could have done it while you backed up. If you had the gun ready you could have dissuaded him from shooting.