Combined with leaking hydraulics, which a lot of them have and it could very easily result in OP's disastrous delivery. It could have been smoldering for a while before the driver noticed. Knew of one driver that didn't know he lost an entire Escalade until the highway patrol tracked him down. Same driver would steal brake fluid from garages to top off his leaky hydraulics.Not sure , but to me I'm guessing brake fire on the transport truck.
Haha I got a pretty good kick out of that. Actually that exact thought popped into my head.too soon.