Meanwhile in Pennsylvania . . .

What happened to the official rule of  whoever first calls “SHOTGUN,” gets to sit shotgun? Or how about whoever is already sitting in the front seat gets to stay in the front seat?

Well, one brother-sister duo found themselves in some serious trouble when they just couldn’t follow the simple rule of front seat privileges.

Bret Brezenski (27) and his  girlfriend were picking up Bret’s sister Brianna (20) from work when the siblings got into it about who got to sit in the front seat — Brianna or Bret’s girlfriend (who was already in the front seat BTW).

It got real, real quick, and Bret and Brianna took their verbal fight physical and were straight up attacking each other.

That’s when the police showed up.

Bret and Brianna jumped in the ride and took off with Bret at the wheel . . . and it turned into a high speed chance . . . with the girlfriend basically hanging out of the window.

The chase came to a standstill when they hit a traffic jam . . . and then Bret and Brianna jumped out of the car and started attacking the police!!

The siblings were arrested and charged with assault AND resisting arrest.

As for Bret’s girlfriend . . . authorities say she was a victim (I mean chick was basically kidnapped when her beau started the high-speed chase) and will not be facing any charges; though, she has filed a restraining order against the WHOLE Breznski family.