Sheeez '4x2' I wouldn't want yr job for all the tea in China mate. I like flying but not at that high risk:-)
I lost a mate not that long ago as an Ag driver, he didn't hit wires but he said a few times over the years he came damned close a couple of times & had to change the colour of his duds due the obvious!
I can imagine that the whereabouts of every wire especially single earth return wires that are scattered across this vast brown plains of ours would be nigh impossible to know.
Perhaps someone could invent a piece of equip that detects an electrical field ahead of an A/C & alert the driver b4hand in a timely manor?
Wmk2