Well, you could drive around with water and a haz-mat suit in the car. Put the suit on, walk from the car to a decontamination shower. Or drive your car into a purpose built car-wash (I'm not sure it'd have to be purpose built, even. There are a number of chemicals and temperature ranges that are not so good for a human in a haz-mat suit that'd work well on a sealed car).

At any rate, I suspect that if you're the kind of paranoid elite that worries about escaping a bioweapon attack in your Tesla, you'll have your own converted nuclear silo to use as a safe-house. Presumably with suitable decontamination showers (for vehicles and people) at the entry points.

Before the hazmat teams arrive! What, are you going to wait around in the danger zone and keep breathing spores? I'll adopt your kids if they're good at scrubbing floors and cooking.

You're the guy in the epidemic movies that breaks quarantine and kills another million people by sneaking the pathogen out of the hot zone.

Man I hate that guy.

If you breathed spores you're already infected. Your car can't help. And the spores on the outside get spread, plus the ones in your filter kill your automechanic and that starts the second wave.

Epidemic-causing pathogens like plague are nearly useless as bioweapons: they're more likely to kill the attacker (or their friends, family, or entire country) than the people they're trying to attack. Actual bioweapons are almost invariably things like anthrax, brucellosis, and botulinum, where person-to-person spread is rare or impossible, and which you're very likely to survive if you can keep your dose down and get treatment.

You shouldn't be getting your information about the world from movies — that can get you killed — and you especially shouldn't be criticizing people who know more than you on the basis of movie plots.

Yes, and your car which has been in an anthrax spore cloud is safe to leave a quarantine area?

My movie analogy doesn't change the fact that you're inciting other people to break quarantine based upon a laughably incorrect assertion that somehow an air filter makes you and your vehicle safe for other people. Talk about a criminally dangerous sense of entitlement.

It's not the arrival of the HazMat team that makes the car unsafe to exit... It is the contamination present on the outside of the car. You are bringing the 'danger zone' with you (and exposing countless other people who would not have otherwise been exposed as you drive around)

You aren't IN the danger zone. You ARE the danger zone!

I prefer to be on the highway [away from] the danger zone!