Players begin Motor Town at level 1 across seven professions and accumulate coins and experience by completing jobs and driving. Level progress is visible from the pause screen and unlocks access to vehicles and upgrades.
The seven tracks
Driver — the umbrella level. Accumulates from any driving activity and gates entry into other careers (e.g. Police needs Driver Level 2).
Taxi — passenger fares.
Bus — fixed routes with scheduled stops.
Truck — point-to-point cargo delivery.
Wrecker — towing, rescue, vehicle delivery.
Police — patrol and fines.
Racing — circuit laps and time-attack.
Manual vs autopilot
Driving manually instead of using autopilot earns full XP — autopilot cuts XP roughly in half. If you're grinding a track, drive it.
Where the official site stops
Motor Town's official site explicitly lists only Taxi, Bus, and Truck as published jobs, noting "more special jobs will come in future". Wrecker, Police, and Racing are documented in community sources and present in-game but aren't enumerated as flagship careers on the publisher's homepage.