Someone built a bike that prints custom messages on the ground!

21 May 2026 · 1 min

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In this short monologue, Dan Novaes describes a novel advertising device built in the United States: a bicycle equipped with a water‑spray system that can print custom messages on sidewalks as the rider pedals through high‑traffic areas. The bike allows users to type any text, which is then sprayed onto the pavement behind the bike, creating a temporary, eye‑catching display that disappears as the water evaporates. Novaes explains why this approach is a clever business opportunity. It requires no permits or billboard fees, incurs minimal overhead, and can be deployed instantly in busy pedestrian zones. Brands, events, restaurants, and local businesses can pay for the placement, route, and ride, gaining high visibility among thousands of walkers during peak times. The model scales across city blocks, offering endless potential clients while avoiding cleanup or fines because the messages are transient. The overall argument is that the most effective advertising tools can be low‑tech, ground‑level, and directly in the line of sight of foot traffic.

Chapters

Someone in the United States built a bike that prints messages on the ground with water. You type in whatever you want, ride through any high-traffic area, and the machine sprays itself behind you. No permit, no billboard fees, no ad budget, just a message on the pavement where thousands of people are already walking. And here's why this is such a clever business. Every brand, event, restaurant, and local business needs eyeballs. Most of them can't afford billboards or paid ads that actually work, but a water message on a busy sidewalk outside their storefront during lunch hour as something everyone could stop and look at. It disappears on its own, so there's nothing to clean up and nothing to get fined for. You charge the business for the placement, the ride, the route, and move on to the next client. It's a low overhead, zero permits, endless potential clients within a few city blocks. Sometimes the most creative advertising tools don't live on the screen, they live on the ground right next to the people that are already looking and walking by.