Spoiler: Intended Solution(s)? After putting the ball in place I used the autopilot trick to get down. Is this intentional? Another way I completed it is bringing the slider to the car door and opening it quickly so that B falls (although that's even more complicated than autopilot).
@Frenzies Well, the idea following @nGord's advice of using the documents, was to have kids learn about gravity, Spoiler: so My intended solution was to go to the platform and after dropping the ball to return to the draggable but move it so B fell to the floor, is this what you meant with the autopilot?. I knew some would use the door as well but I don't mind that, I think it can be a valid solution.
@vince The doors took some time to figure out while to have them open smoothly and keep the design clean, but the car didn't take so long actually (definitively less than your fighter jet of your last level ) thanks for the review!