Hired Drivers/Management, New Trucks, Income, Offices, & Related Questions.

[DuallyDiesel]

My problem is that i have 3 trucks a FLD120, 9500 and my Argosy. When I buy a new truck and switch the new one to me, the driver that was driving the Argosy drives my previous truck and the other driver stays on the 9500, while my Argosy is not used. Basically I don't want the drivers driving trucks with mods as that costs more for repairs. At least that is how i understand the game physics.