Found this..

[MOstang]

Originally Posted by 28HopUp

To elaborate on what Mike said, eBay is removing listings on cars that have emergency equipment installed. They do not want to fascilitate an imposter who is looking for a car to use to pull over unsuspecting drivers (yet eBay allow ads for emergency lighting where anyone could create their own "emergency vehicle").

I think your premise is true in terms of what eBay is "trying to police", but they have a long way to go in terms of consistently applying the practice (as you also seem to suggest). They way to apply their practice, just creates a lot of confusion in the implementation. If applied consistently, I think it can make alot of sense, but if it's going to be haphazardly applied I don't see the point. They should hire "Peggy" and put her (him) to work on it.