I saw this thread and thought, "Dick measuring contest imminent". I swore not to participate other than my essentially mocking it by invoking the disabled Sherman tank "Fury" and the inbound SS Battalion.
But I'm going to toss my nickel in because there might be some value in getting some basics and essentials out there in case we are faced with various unlawful methods of detention, which is what these roadblocks are by definition. And they do have the potential to become deadly.
My mindset. Long arm reasonably accessible (for me that means trunk) or in elevated risk areas, back seat floorboard. Not going to be introduced or deployed if egress is possible.
As a side note - when 'battlefield' conditions change, you tend to change your gear. I typically carry a 1911, 8+1 and at least 1 or two spare 8 round magazines. I have 5 more in the vehicle. But I have a long arm there, too, just in case.
The average daily 'battlefield' is me schmucking around like everybody else. Home, store, work, picking up and dropping off females which includes my girls. My sidearm choice is probably adequate for most any encounter I might realistically face. Most violent encounters with handguns involve 3 rounds fired cumulatively by both sides - and the fight is over. Someone prevails, someone doesn't. Even if there are a few assailants and 10-15 rounds are exchanged and all players are still intact, both parties are generally wanting to get the f*** away from each other - and that is exactly what my actions will be. Moving to my vehicle. And leaving. My 1911 and a few mags will probably serve well enough in all the above mentioned scenarios.
Today, we have some spot anarchy and chaos. First order is avoid it. But since I'm not included in their planning sessions - I know I could walk or drive into a party I wasn't aware of and wasn't invited to. So, I've switched to a 9mm full size 15+1 and a spare magazine or two on me. 5 more magazines in the vehicle. Same long arm. More bad guy (numbers) potential? More bullets on board.
Tenet: Never run out of bullets before you run out of bad guys.
Nobody with sense is going to bail out of an operable vehicle, especially not if they can simply back up (as in the video) and leave. "Run like a girl" is my motto. I don't give a F if I have two forward mounted .50's. I'm LEAVING.
If they mob my vehicle and want to start touching me, I'm running them the f*** over. If they disable or block my egress, then I'm using my handgun to clear a path to my long arm (about 15 seconds is my estimate and I have 15 rounds) and then it plays out with my intent to run like a girl - and cutting a swathe through any blockers until I am clear of the hot LZ I've found myself stuck in. Escape and Evade. We all know the drill - or should. If they overwhelm me getting out of my disabled/blocked vehicle while I'm trying to access my long arm (grasshopper on an ant pile) - then it just isn't my day. But there will be more of them dead than the one of me - so they lose the war of attrition.
And I've always been good with that.