Order a meal to be delivered in London and the chances are it will be dropped off by a cyclist with a modified ebike (who has risked life and limb to get there, to be paid a lot less than a living wage, for some reason a lot are Brazilian).
There are very few couriers and DRs anymore, no money in it and little demand. But you can sometimes see these guys.
On the subject of modified ebikes
[70mph is more the preserve of the rich and stupid; Deliveroo and Just Eat riders can and do get up to 30]
I am often in the flightpath area at weekends, I look forward to unexpected showers.
