And you must live within walking distance of a train.

Or they just take a bus? It's crazy to think about, but not all buses are US and Canadian ones that come every hour and take two hours and five connections to get you to the station.

Also, locking up a bike is comparatively very easy to parking a car. The only reason car parking is often easy in North American cities is because of ridiculous, overinflated parking minimums that subsidize car ownership through free storage for giant metal boxes, blanket the landscape in otherwise-useless asphalt, and vastly increase the distances between locations for the people not using cars (including from, say, your house to the train station).