When I was a young boy I tried to create a roller coaster system from technical lego by turning the points upside down and slowly changing the angles of the pieces over a long piece of track. Its not obvious how it works but don’t worry it didn’t work so its not actually worth going into more detail about. So I was suprised to see K’nex launched a range of roller coasters tracks. I can’t express how cool I think this is, if I had the time and money, I would certainly get some and get it setup in a room. Instead I get to watch the endless youtube videos and wish instead.