1. https://www.sae.org/attend/student-events/sae-supermileage/about
2. https://en.wikipedia.org/wiki/Shell_Eco-marathon
3. https://effi.saenis.org/
4. https://www.greenpower.co.uk/greenpower-categories
5. http://biketechreview.com/tires/rolling-resistance/475-roller-data