It's so funny, at 9 my dad was a diesel mechanic, and the truckers would always ask me to drive their trucks around, they loved it. At that age, jamming gears on a 13 speed, or through the wheel on a duplex Mack, it didn't matter, and taught me to back up with mirrors way before I needed to.
I would go back and forth in the parking lot as long as they would let me shifting and jumping on the binders to slow down. What a fun time. I had no idea how little I must have looked until I saw that video.
Thanks for sharing!