Note this if you sell an arena wars vehicle

[sea biscuit]

If you sell an arena wars vehicle with a custom name and put a new vehicle in its slot, it will change the name of the vehicle that you replaced it with.
I recently sold my gauntlet titled "Liberal Killer" and replaced it with a scramjet. I spent about 5 minutes on the phone with my mechanic without realizing that the scramjet had decided to change its name to match its precursor. If anyone comes across this bug, just deliver it as your old car.