If I was solo, I'd likely be on one of my motorcycles. No problem getting away on the bike, IF I could keep 'em from getting to me. The worst case I can think of is being in my wife's Toyota with the wife and getting trapped. Then, I'd just have to take the chance and start shootin'. If I got shot, so be it. Sort of an Alamo situation, but I ain't lettin' 'em get to the wife. Something tells me these punks ain't exactly brave individually. The bark from my 3" Taurus 66 with 125 grain full house hollowpoints would likely cause a stampede. I don't think any one of these punks is brave enough to be the first one to charge me and I doubt after a couple of his buddies fell, he'd want to try me with a firearm. If I were defending my wife, that's the chance I'd have to take.
Most of the time when I'm going to the big city, I'm carrying my Kel Tec P11 as a back up, usually one reload, sometimes 2, and I have the .357 Taurus revolver or my 8 shot Ruger P90 .45. I bought the Taurus to wear IWB in warmer months because a revolver doesn't have that slide that prints so much. I figure with the 9 as a back up, I have some amount of firepower. So, if I were to come upon something like this, I'd likely be armed with a 6 shot revolver as a primary.
Might be a good idea if I drove in an area like this much to take along my 20 round SKS carbine. I have it in an "assault rifle" case with spare stripper clips. I could just lock the case in the trunk when I'm out of the car, take it out and put it in the car when I get back in. I never carry it when I'm going somewhere, though. The likelihood of getting in a situation like this in Texas is nil even in big cities. Punks have more sense than to challenge an armed society. You know what they say, "An armed society is a polite society." Something tells me this happened some place like New Jersey where the general population is mostly unarmed.