Bus

Length and pivot point. A bus swings wider through a turn and needs far more room to straighten up, so the racing lines and parking angles that work for a car will put a bus into a wall.

Bus Parking. It introduces how the vehicle handles in controlled conditions before you take one up a mountain or into a busy station.

Bus Escape: Clear Jam is a sliding-block puzzle using buses, which suits the vehicle since the whole point is that they cannot easily get out of each other's way.

Gradients and drops. Weight matters far more on a slope, so the careful throttle control that mountain roads demand is a different skill from parking one accurately.

Yes, all of them run free in your browser with nothing to install and no account needed before you start, from the parking challenges to the mountain routes.