Tony got a whiff of life in the Good Old Days before the horseless carriage, reminding me of this classic description of London in the late nineteenth century.

The Strand of those days...was the throbbing heart of the people's essential London...But the mud! [a euphemism] And the noise! And the smell! All these blemishes were [the] mark of [the] horse....

The whole of London's crowded wheeled traffic - which in parts of the City was at times dense beyond movement - was dependent on the horse lorry: wagon, bus, hansom and `growler', and coaches and carriages and private vehicles of all kinds, were appendages to horses...the characteristic aroma - for the nose recognized London with gay excitement - was of stables, which were commonly of three or four storeys with inclined ways zigzagging up the faces of them; [their] middens kept the cast-iron filigree chandeliers that glorified the reception rooms of upper- and lower- middle-class homes throughout London encrusted with dead flies, and, in late summer, veiled with living clouds of them.

A more assertive mark of the horse was the mud that, despite the activities of a numberous corps of red- jacketed boys who dodged among wheels and hooves with pan and brush in service to iron bins at the pavement-edge, either flooded the streets with churnings of `pea soup' that at times collected in pools over-brimming the kerbs, and at others covered the road-surface as with axle grease or bran-laden dust to the distraction of the wayfarer. In the first case, the swift-moving hansom or gig would fling sheets of such soup - where not intercepted by trousers or skirts - completely across the pavement, so that the frontages of the Strand throughout its length had an eighteen-inch plinth of mud-parge thus imposed upon it. The pea-soup condition was met by wheeled `mud-carts' each attended by two ladlers clothed as for Icelandic seas in thigh boots, oilskins collared to the chin, and sou'westers sealing in the back of the neck. Splash Ho! The foot passenger now gets the mud in his eye! The axle-grease condition was met by horse-mechanized brushes and travellers in the small hours found fire-hoses washing away residues....

This description appeared in Julian Simon's The Ultimate Resource, but I haven't been able to determine the original source.