 And there's nothing to stop people with those bikes on trails to head off the trails in the areas that are sensitive, spook wildlife and do all sorts of things. Now I'm not saying even two percent of those folks would do that, but it doesn't take very many people to harm resources. There's obviously a place for e-bikes in a park unit, but there's places perhaps where they shouldn't be allowed because other people go to national parks for experiences that don't include whipping around on bikes at 20 miles an hour. Let's let our agencies, all of them experiment. They could try an area for a while to see what happens. Learn by doing and develop more effective policy by observation and seeing what happens.