Save the last dance for our planet.

MW is turning people into power producers at the Marathon races in Berlin, Cologne and Frankfurt. Visitors are invited to rock a special dancefloor at the BMW booth. Generators underneath convert the compression of the dancefloor into electricity which will then be used for an i3 to complete the marathon distance of 42.195 kilometers (26.219 miles).
energy-floors.com via insideevs.com