This visualization shows the race car path synchronized with a video recorded on Kotarr track. This is part of flatout tests, an application to track and measure times for race cars. You can watch a the video in high resolution to see details of how the application works (the android tablet is placed just on the right)

The visualization is done with d3 visualization library, track data is from OpenStreetMap, the video was recorded with a GoPro, it was coded by @javisantana

click play to start

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Here you have a map showing the different speed along the track. This visualization is done with CartoDB