I think they both made a mistake, the pilot by dragging it in, the driver by not stopping and scanning (as he admittedly knew he was supposed to). Don't know how the insurance companies will haggle it out but I dont see groundbreaking new law being written here.
Or a cherry-picker with the basket extended ? Oh the possibilities !
The part 77 standard is:
10 feet or the height of the highest mobile object that would normally traverse the road, whichever is greater, for a private road,
So, if Semis routinely drive on this road that serves a couple of hangars and private residences, the airport will indeed have to move the threshold back even further.
Just working off the numbers on their airnav entry and google maps, the threshold is displaced just enough to give a 20:1 slope for a 9ft object on the road to the edge of the runway safety area.
They have a 4.5deg VASI, that's what, 1:12 ? So 440ft from the runway he should have been at 36ft over the road, 1 degree low on the VASI would put him 27ft over over the road.
I can't get Martha Kings voice out of my head: red over red, you are dead