Steampunk may be in love with brassy steam-powered devices, but what about the horses? How would the modern world be if everything was still horse-drawn?

Steampunk may be in love with brassy steam-powered devices, but what about the horses? How would the modern world be if everything was still horse-drawn?
Besides; steampunk is just sooo last year century...
http://www.instructables.com/community/Horsepunk-Exhibit/