This article features several bikes, but offers no basis for comparison and doesn't discuss how testing – if any – was done for the piece. The article is interesting for its notes on more recent and unusual bikes to come to the market. The piece focuses mainly on trainers and rollers that allow you to use your own bike with them in order to bike indoors. One – the Inside Ride E-Motion Rollers – is actually hundreds more (*est. $795) than some more modestly priced exercise bikes, and that's even before you buy a conventional bicycle to use with it. A somewhat conventional exercise bike – the Expresso Fitness S2u (*est. $4,995 and another *est. $225 for installation) – features an LCD screen that pits the user against interactive courses and races.