At a recent Sunday-morning classic car meet, I was about to tuck into a bacon sandwich when a small yellow box purred by, doing around 15mph.
It came to a stop in front of the assorted Triumph Stags, Lotus Esprits and Ford Mustangs, then one side of it opened to reveal the driver.
Unfolding herself into a standing position, she effortlessly pushed the three-wheeler back to join the other vehicles, where it quickly attracted a curious and amused crowd.
Only very small cars inspire these reactions, but, in the right conditions, such vehicles have much to commend them.
Louise Barrett, the owner and driver of that crowd-pleasing Willam Cyclo, agrees.
If you count the Sinclair C5 she also owns, itʼs her fourth microcar – and she loves them all.
“Theyʼre little adventures on three or four wheels,” says Louise, whose daily driver is a modern Fiat 500, while her home is filled with 1960s and ʼ70s memorabilia.