Someone had an excellent analogy about the creeping effects of government over-reach using the common fuel can as an example.
It went something like this- Some cube-dweller at a .GOV agency decided that the old fuel can (that worked and didn't spill fuel all over) was too dangerous.
So they mandated a new kind of spout...that didn't work.
Then they mandated another kind that spilled fuel all over (making thing safer, you know).
Then they redid the regulations several times until we get the lates "safety can that we have today.
It's an automatic spring closing cap that operates by pulling back on the carrying handle.
Except- that the ONLY way to secure it in a pick-up bed is to use that same handle to secure it to the bedrail.
THEN when someone drops a grill into the next lane over and you have to make sudden braking and evasion maneuvers from the car next to you ....
That same handle will spill diesel from the canted-over can.
Then we get into the aerodynamics of a pick-up with a closed tailgate and what it does with half a gallon of sloshing diesel.