From WKOW-TV:
The Central library unveiled “Spoke-n-Words”; a library on wheels. It’s a bike with a trailer that can carry books into neighborhoods that don’t have libraries nearby.
From the Spoke-n-Words Info Page:
Visitors to Madison Public Library’s Spoke-n-words will have the ability to sign up for a library card, check out books, attend storytimes, and work on participatory art projects throughout the city.