For ARAC a few ideas.
What if the tool kits that civs can use only repair the car slightly just like med-kits, so you cant get back up to full speed? Only RAC can fully fix up your car.
Maybe increase damage done to engine/ fuel tank on crashes, and a toolkit can only repair the engine...
Name of the person you are reporting (in-game name):Kieron
Time & Date this happened:17:30 25/01/2015
Which Server did this happen on:Server #1
Description of what happened: Went to clothing store in Athira, noticed some people pulling up so I decided to go back to my car as i did...