I consider myself pretty aware of my surroundings. But there are times when we have to let people close enough to us to be dangerous. Remember, a human can cover 15 yards in a second. Story time. Once upon a time I was driving in Toledo in a high traffic area. There were a bunch of people on the sidewalk right next to the right lane I was in. One of the people on the sidewalk ran over to my car, opened the passenger door and attempted to get in while asking for a ride. This all happened in under a second or two. Thankfully he really was just a guy looking for a ride and immediately left without me having to do something, but it illustrates the point that you shouldn't put all your stock in situational awareness. That will prevent a lot of issues, so it is of utmost importance, but just being aware won't guarantee you can avoid an attack or that you will always have plenty of time to react or draw your weapon. The fact is, you aren't going to get ready to draw your weapon every time someone walks on the sidewalk near your car. And any second, one of them could attack. So being ready in your car with a quick access firearm is not a bad idea, or only for those who aren't aware of their surroundings. I personally carry on my hip in the car, as I do everywhere, but I certainly won't question the situational awareness of someone who wants fast access to their gun in the car.