Bikes

A bicycle converts human effort into forward motion more efficiently than any other machine. The energy cost per mile is lower than walking, running, or driving. A fit rider covers 100 miles on 2,000 calories — the same energy a car burns idling for an hour.

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The bicycle’s range scales with the rider. Add bags and the range extends to days, weeks, months. The machine that takes you to the grocery store is the same machine that crosses continents.

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Speed sits in a useful middle ground. Faster than walking, slower than driving. The pace lets you see what you’re passing through — the terrain, the weather, the towns — while still covering meaningful distance.