@spacehobo @otte_homan: Ok, this short clip is impressive. Or rather the cycling prowess shown in there. And I don't mean the rather easy ride through a skate park without any jumps or so. What impressed me most was riding a
#Brompton with an open main hinge (at an around 90 degrees angle) like a one-sided
#swingbike at about second 15:
https://www.youtube.com/watch?v=xSSjTMO7fJM&t=15 β Because otherwise this trick never would have worked.