it the #1 carpooling service in Europe with more than 3.5 Million registered users. There are about 170.000 rides per week with a total distance of 40.000.000 km.

This visualization shows a week in December 2011. Every colored dot represents the current position of a single lift at a specific time. At peak times (eg. Friday afternoon) more than ten thousand are active at the same time.

We developed this animation here at with standard web technologies: JavaScript to do the math, HTML5 canvas to draw the frames, the Google Maps API to request routes, Chrome for fast rendering performance and Node.js to save back the image data.

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