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I want room sized treadmills like they had in the early '90s:

https://www.youtube.com/watch?v=4JkIs37a2JE

That was actually staged. They built the walls as a floating frame that could be moved around him. It wasn't until a decade later that we started seeing prototypes for roomscale treadmills like these:

https://youtu.be/dTAAsCNK7RA

shhhh, you'll ruin the virtualness of it

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