The world of O scale has largely eliminated the manufacturing of tubular track, while the "real world" has seemingly just discovered it. One can imagine someone taking a sledgehammer to set the pins and lock-on. 
http://www.tubulartrack.co.za/
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It may be tubular, but there is still only two of them. 
Think clockwork..the springs need a turbine to wind them up.
The rail is still solid...
I thought the title was funny as far as their product brand name "tubular track" and as sectional track with integral ties and rail similar to toy track I wasn't suggesting literal tinplate track and I thought that would be obvious but my tongue was too far into my cheek, aka driving the pins with a sledgehammer.
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