Hello Team!
I have also seen the tree appear in the middle of the runway as stated in this trail. I have also noticed that the fire trucks that drive around the airport in both Hilo and Lihue, when looked from a distance they look like they only have one axle (they look like chariots with two wheels in the middle of the vehicle) - once you get close, then the two axles show up and they look normal.
Hope this helps!
Dennis D. Mullert