Okay so, I have said to you when you were trying to start up your business that developer support is not guaranteed and not to ask. It also says so in the policies.
Secondly,
It is also stated in the policies that you cannot do the job of a department so you cannot tow vehicles.
I suggest you have a re-read of the business policies.
Try thinking of other RPs to do as there is a wide range of possibilities when it comes to mechanics. Some ideas are already stated above.
FoxyTheWereFox
Deputy Chief Inspector
Firestone Department of Commerce