Yes ... , MARVELLOUS!
... that's really interesting, Peter ...
... so, too, is my son - a Perth United Cycling Club veteran - who's also fortunate enough to've worked for more than 20 years as a Bike Mechanic with an old-established local business. Used to be a keen enthusiast myself (albeit as a touring cyclist) until impaired hearing gradually rendered it unsafe for me to risk venturing out in today's heavy traffic.