I suspect there are some whopping economies of scale to be had here, though. This was a one-off and prototypes do tend to be expensive. BTW, I'll bet 2/3 the c

I suspect there are some whopping economies of scale to be had here, though. This was a one-off and prototypes do tend to be expensive. BTW, I'll bet 2/3 the cost was that military-grade omnidirectional treadmill. Mass-produce that and you're back into the realm of possibility.