20 years riding bikes and I never knew I have this problem. Even now I don't have it. It sounds like a nice gimmick but not a solution to a real problem, at lea

20 years riding bikes and I never knew I have this problem. Even now I don't have it. It sounds like a nice gimmick but not a solution to a real problem, at least not for European traffic where bikes are reasonably fine and where the top cause of motorcycle fatalities is riding way too fast.