By expanding the spaces, we can keep more cars in a given garage. Remember that we cannot exceed the car limit.
When a car leaves the route to the garage where we have a mechanic (even if it is not the base garage of this vehicle), the car will be repaired provided that the mechanic is free at the time. The whole thing happens automatically. The mechanic can repair one car at a time. Each mechanic level shortens his work time, for example, if the repair is to take 10 minutes, then:
| Mechanic level | Working time (time/level) |
| 1 | 10 minutes |
| 2 | 5 minutes |
| 3 | 3 minutes 20 seconds |
| … | itd |
After the car is repaired, the mechanic checks to see if any other vehicles need repair and if he finds any, he starts the repair; cars that are higher up in the Cars tab also have higher priority with the mechanic.
A great advantage of Convoys is that their repair time is counted as a single vehicle
The vehicle will drive slower, but will still be able to perform its tasks
If the garage has a tank, the car that leaves the route will automatically refuel, the condition is to have fuel in the garage, this saves time.
If the fuel runs out on the route, the car stops for a moment and refuels automatically on the route, but it takes longer than refueling in the garage.