Today I drove behind a giant HazMat truck for about two miles. It was an impressive machine. It bore the legends "Get out Quick: Be Safe" and "Hazardous Materials and Environmental Protection" in friendly, huge letters along its bright red sides. The vast back doors were eye-dizzyingly strobed in chevrons of fluorescent green and red.
Also on the back doors: two "L" learner driver plates. And I had to keep my distance, because whoever was driving this truck was clearly freaking out, was driving terribly badly, and was clearly terribly afraid.
As I was. This was not a reassuring sight.