A Porsche with a ladder rack ... now, that I would like to see!
That's an interesting point about bungees; I had not heard that before.
There has been an amazing amount of creative engineering put into a variety of ladder holding devices; I can't say I'm convinced the problem has been solved. Especially for multiple ladders!
Even when they achieve "ladder harmony," there will still be the problem of strut, pipe, and all the other stuff we need to haul.
The guy I feel for the most was the guy who had a rolling toolbox fall off. While he did immediately stop, the box (those things aren't cheap) was destroyed ... and he had countless sockets, etc., spread all over the freeway.
What puzzles me the most is that ... how is it I've had tool bins drop open, expensive stuff either fall off, or get 'beamed off' in transit ...yet the cup of coffee I inadvertently leave sitting on the rear bumper doesn't move an inch, no matter how rough the road?