I was going to ask if he’s selling drugs out of the car but then realized he’d not be loud like this. Drug dealers are quiet as not to attract attention

I had couple of rowdy neighbours in the past. Nothing like what you described but bothersome enough. If we called the police they always showed up. Weird yours doesn't show up?

Make police reports. You don’t need to know names to make reports. Descriptions and location will suffice. You know his license plate. So they’ll figure the name.

Every time you email your landlord CC local government, city and county. Eventually this guy will move or there will be enough evidence to evict him for constant violation of regulations