Because It's Friday

The open-cab locomotive is Firefly, a recently-build replica of an 1840s locomotive:

The original could pull an 80-ton train at 60MPH, which was pretty impressive in its day.

Here's how eccentric the Brits are: The Great Western Rwy. in Firefly's day was a broad-gauge railway with a track gauge of 7'-1/4". So when they wanted to build a replica, they built it in broad-gauge and laid mixed-gauge track so they could run it.

The Brits also have something like twenty steam locomotives under construction.