Apparently there’s no shortage of ways to cross-pollinate two of the world’s greatest inventions: the bicycle and the printing press. At this rate, we might have to start a sister site. Hmmm… bicycleresting? Not very catchy.
Contrail is designed by Studio Gelardi as a biking community tool. The idea is that your tires “print” a trail of chalk as you ride. This trail functions as a guide for other cyclists as well as a signal to motorists. Over time, the trail grows more colorful and more clear so cyclists who are new to a given street know where to ride… like a path in the woods. The results are functional and attractive.
Here’s some concept art to illustrate how the mechanism works…

















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My wife sez: “Is Jason, like, into biking now? Does he have a fixie?”
…A sister site may be in order.
Not competitively or anything. But yeah to the first question and no to the second. Beats driving.
Anyway, I can’t help it if there’s all kinds of printeresting bicycle stuff out there.
This is totally sweet, though I’d be a little leery of trying to stop with chalk all over my tire… seems like it’d cause all kinds of slippage.
still totally awesome.