You dont loose any tickets (Nor the other team) When you destroy a fob. (This is also because in previous versions, and maybe this one to, When you placed a fob, And you droped a repair station, It would build-beark-build-break-build-break, So if you had tickets counting on then, It would be an easy exploit for a griefer)
Bomb car music will allways be the bomb car music =P
You probably can somehow edit it, IDK how, But then you can not play online.