There's eight slot cars pictured on the track in the first shot above, but they're moving so freaking fast they're captured on-screen only as blurs. It's a screen-cap from an international championship held by a Finnish slot car enthusiast club. While it's not quite mag-lev—the much older slot-car technology uses a pin on the underside of each car extending into its lane-specific slot—the speeds attained are staggering, as you can see in the video below. (Action starts around 0:53, and you needn't sit through all five minutes of the vid to get the idea.)

Aside from the coolness of the sheer speed, another thing that caught my eye in this video was in the first minute, where they show the contestants all tinkering with their self-built vehicles. You'll notice they all have cases on their desk holding their tools and gear:

While the cases vary in outward appearance, they all have identical overall designs: Rectangular boxes with two cabinet-style doors that swing open in the front, creating a wide-surface area workstation with built-in parts storage in the center compartment.

Looking a little closer, this one appears to have adjustable "shelves" in the form of those white slotted cards:

When I spotted this one, below, the rounded corners almost made me think it was a Mac G5 tower that had been converted to the purpose. (And check out that handy on-board lighting source he has clamped to the left-side door.)

But in this shot, below, you can see three of the contestants have this same case, indicating it's probably a standardized model.

My question to you is, do any of you know what these cases are called, and what trade they were originally designed for? They're clearly designed for portability, and they don't seem like they'd be useful to a proper electrician, who needs a toolbag they can set down and dig through on the floor or up on a ladder. These cases here are obviously designed to be opened and placed on a desk, and seem intended for some type of traveling repair- or craftsperson. Please drop a line in the comments if you've seen these before and know anything about their origin.