Plain physics feels messy and confusing in this game. The controls are simple clicking and dragging which is kinda weird anyway.
Step through the game by clicking and dragging, you can select tools from the menu.
Clicking and dragging are the controls stated. The features are repairing damage, repainting, and cleaning stains.
Most helpful tip is to select tools carefully from the menu. You must wait for animations to finish before moving on.
Q: What are the controls? A: Clicking and dragging.
Q: What is the objective? A: Repair damage, repaint, and clean stains.
Q: What is a stated feature? A: A menu to select tools from.
Q: What is the main mechanic? A: Clicking and dragging to fix cars.