Indeed, the PRR S1, and the UP BigBoy are purely American, and the first is the fastest steam engine ever, and the second is probably the engine that can handle the heaviest loads with the steepest grades, without a chain. Though there are some honorable mention locos in Madison, IN that have the world record for steepest grade without a chain, but those guys can't haul what BigBoy can. BigBoy can't make that particular grade, not because it is too steep, but because the rails are too narrow and curvy. Deisels can't compete for load weights, neither can electric engines. Un/fortunately both diesel and electric beat the crap out of steam on maintenance costs and downtime.

Fucking shame about Roger Rabbit.

We were, we aren't.