Is it legal for postal carrier to sit in middle of car, and other postal problems.

Wrong, my ex is a rural carrier. He took the test and got the job. He was told to supply a vehicle. He did not bid for it, it’s not a contract, none of the routes around here is a contract. He’s just an employee like everyone else, except he has to supply the delivery vehicle. He asked if they could provide a government vehicle, and they said No Way.