Now that you mention it I could see it being a mannequin.Set up at a carnival or such for people to glance at.Some interesting things about that picture though.I noticed the hanging spring too,so no,he isn't picking up the car.His shoes are barely touching the axle,if at all.No bending of the soles like he would have if pushing upward.Also,what is that pivot thing in the center of the axle?What is that thing spanning the space between the fenders,arching up over the hood? I can see the headlight wires,but also something else that might be cables or rods that are lifting the car.I was looking at what I thought might be a truss under the rear axle,but I think that may be something behind the car,or a shadow.I think it's fun to study pictures like this that look like they were of the three stooges.