I'm with bcipam on this one. I think it's fine to test ride bikes at more than one shop with the intent that you will end up buying a bike from one of them. But I have a problem with taking the time of the folks in the shop when they don't stand a chance of selling a bike to you. Yes, it may be a subtle difference between taking test rides at multiple shops when you can only buy from one of them, but I think the intent of purchasing a bike from one of the shops makes a difference.