"Well, yes sir, this is a Hammond bi-valve serrated brake, you understand sir, had it put on in a truck ro-de-o in Springfield, Oregon, had to back through a slalom course of baby's bottles and yellow nappies, in the existential culmination of Oregon, lots of outhouse freaks up there, you understand, sir, a punctual sort of a state sir, yes sir, holds to 28,000 pounds, 28,000 pounds, you just look right here, sir, tested by a pure-blooded Shell Station attendant in Springfield, Oregon, winter of '62, his gumball boots never froze, you understand sir, 28,000 pounds hold right here - " Whereupon he yanks back on the hand-brake as if it's attached to something, which it isn't, it is just dangling there, and jams his foot on the regular brake, and the bus shudders as if the hand brake has a hell of a bite...