So my question to you, is that still the case, and will that always be the case, or is that something that's improving?

Oh, it's definitely improving.

Nobody really talked about inertia.

Well, actually, everybody talked about inertia, but it was such a minimal inertia compared to what you think about on or what you have outdoors.

I mean, people don't really think about when they're riding outside, they just think about the weight of their bike.

But if you're a 150 pound person going down the road at 25 miles an hour on a- 18-pound bike.

To stop that mass, it's a lot of inertia.

They don't have wheels, the way we think of it, designed completely for indoor riding, but what is the benefits of those? How do they differ from that, just put in an old bike on a, a trainer?