You do you. There's an AR and 5 mags plus plates in the back of my truck today, and I drove the truck instead of the sedan specifically because I was concerned about "drive over obstacle capabilities" after some sportiness in St. Pete last night, so I understand your feelings.
My whole argument has been not to kowtow to the enemy, but rather to be aware of their tactics and prepared for any of the various tactics they use from twitter videos to Reginald Denny.
Just be aware that if you pull a gun because a crowd stopped you and was yelling at you, you are very likely breaking the law, and at risk for being the bad guy on twitter and MSM and possibly arrest warrants. Justification for brandishing varies by local, so just know where you are at.
I guess I am also trying to articulate that "self defense", at this point, has expanded from just surviving the encounter (which is trivially easy in a car) to surviving, winning the legal battle, and winning the media spin so the next mob doesn't come to your house or drive you to suicide. You are doing yourself a disservice to concentrate on the easy part (surviving the encounter) at the expense of winning the after battles.