A year or two ago, someone was working on an app where people would subscribe and then agree to help if needed and be able to be helped if needed. If you broke down, it'd take your phone's GPS and notify the nearest other member. Don't know whatever happened with that.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"