But it's not loud pipes that are costing us riding areas, it's endangered species acts, errosion, liablity issues. Get it? Oh Rex, still at it, eh? I would say that noise is very much a primary factor and that the other things you cite are simply the mechanisms that those who don't like the sound of loud motorcycles use to get their way against us. If noise is such a secondary issue, why has the AMA made it such a focus this year in SX/MX racing? That is the only way to force aftermarket manufacturers to consider it in the design of their exhaust products. Is sound the only thing that gets lands closed? Of course not, but it is a component of almost every argument and discussion of a land use or closure debate. A major component. Citing one of your examples, the threatened closure of Pismo State Beach was supported primarily by residents who dislike the noise and traffic of off-road users. When they couldn't prevail on that argument they turned to tenuous claims of habitat destruction and pinned their hopes on the Snowy Plover. I dare say many of those opposed to ORV use at Pismo don't even know what a Snowy Plover is or could identify one if they did. Their main goal is to eliminate the noise and usage from their backyards (mistakenly thinking it affects their property values). The local businesses, on the other hand, would like the residents to shut the hell up. The same strategy is being used in the Imperial Dunes except the rallying cry there is for the Pierson's Milk Vetch, a weed with no distinguishing traits, characteristics, or significant place in the food chain. Noise is a legitimate reason, everything else are just convenient excuses.