[URSpider94]

How fast do you really think they are going? 15 mph is a pretty good clip on a recreational (non-racing-style) bike. Most people I’ve run across are doing 12-15 tops.

I don’t notice any complaint in your post about how cars are flying along recklessly at more than twice that speed.

[isostatic]

When I regularly rode in London I'd do 7.4 miles in 35 minutes on a Brompton, average of 12.5mph, but factor in red lights, hills etc and peak speed must have been 20.

[URSpider94]

Sure, on downhills I expect you’re getting up to 25 mph or more.