No similarities whatsoever. While I appreciate both bicycles and cars, I have zero desire to acquire an older vehicle. Old cars are nothing but trouble and money pits to boot.
I don't really consider myself to be a bicycle collector either though. To me, that implies that they get zero, or only token use. Although I did get a new bike last year to help me stay ahead of the maintenance curve, I truly enjoy riding my bicycles... all of them.
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In search of what to search for.