Det här är en variant jag ej sett förut
http://www.autoevolution.com/news/what-happens-when-the-boost-control-of-a-drag-bike-goes-full-boost-106193.html
http://www.autoevolution.com/news/what-happens-when-the-boost-control-of-a-drag-bike-goes-full-boost-106193.html