We as car mechanics should be able to buy wrecked cars and then fix them and sell them for profit. Beacuse in the server everyone does /mechanic and then don't wait for the mechanic to arrive and fix the vehicle. Or you could implement vehicle service(changing oil, oil filters, air filters, etc.) So mechanics will have a better chance of earning some profit. Mechanics should also be able to install time bombs/ignition bombs in on the vehicle and do body work at their own garage.