The bus Hannibal and Face use to transport Al Driscoll from the prison is different from the one used in the shootout with the Scorpions. The Team's extras (armor plate hanging from the ceiling inside and the rotating cupola on the roof) are only visible when Hannibal and Face meet up with Murdock and BA.
B.A.'s van is sometimes seen with license number 1AWI247, then with S967238 and also with 2E14853.
When Tawnia opens the storage area of the bus to conceal herself inside it, it isn't locked, so she just lifts up the door and gets inside. But when the prison officer makes Hannibal open the storage area, he has to unlock the door by turning two knobs because it's locked. Tawnia couldn't have locked the door from the inside.
The bus' sign reads "US Marshal", while their uniforms' shoulder patch has "County Marshal".