[jmcenanly]

Here is a picture of the wheel


And here is a vehicle using a metal version of the wheel

[rey]

Didn’t we have airless tires on our tricycles?

[smokingfrog]

Looks like it will have lots of air drag (not on the moon though).

[libertylover]

I didn’t see the price. Probably $500 apiece.

[Vaduz]

Wonder what the drag ratio is?.

[editor-surveyor]

.
Too much friction loss for bikes. It’ll never catch on.