A small wooden box is built to fit the exact dimensions of the negative space on a bicycle and then gets filled with everything you need for drinks in the park. There's even a tiny fold-out table. Of course, you could also use this for picnic supplies like fruit, cheese and a baguette should you prefer. https://www.linkedin.com/pulse/bike-has-built-in-bar-its-blowing-our-minds-sarah-ling
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