It was probably done at a fairgrounds somewhere for publicity.
http://museostradale.com/radnor/pier...arrow_1906.htmDavid recounted tales of the automotive gatherings his family hosted in New England. "We used to have over one-hundred fifty cars in our large backyard and have a party. They would bring a huge teeter-totter and try to get the cars balanced with no side touching the ground—least angle from flat in shortest time wins. Model Ts were good at that." Of course, it was the Oldsmobile Curved Dash Runabout that was famous for staging these sorts of exhibitions in period to advertise their maneuverability.