Wayne, I used some scrap wood to make an upside down T. I secured it on a flat car with some twist ties and secured the phone to the upright part of the T with a rubber band. I then pushed the flat car around. It you can secure the phone high enough to see over the engine without hitting something, you can pull it behind the engine. You can also turn it sideways to get a widescreen shot, but you need to make sure it clears your other engine as they pass.
I ended up making a makeshift one lol. It worked though. Added a sherman tank to the load.
