How do I get into my bus?
If you select quick drive before you start your trip you start in the bus right away. If not you have to approach the bus up to the front door. A tooltip will show you where you can open the door. Click left to do so. Now walk into the bus. To enter the cockpit you first have to open the cockpit door, too. The tooltip again shows you where you have to open the door with a left mouseclick. Now click left onto the seat to actually sit down. The cockpit door closes automatically.