The David Garcia Studio has this piece displayed at the Royal Danish Art Academy. In part, they were inspired by the idea, "How can an individual travel with it’s own library, given that books are so heavy? This is something we can all relate to when moving house." Having moved recently, I can attest that books are frequently the heaviest things one owns. Maybe it's a blessing in disguise that most of my book collection was recently lost to a flood?
I've got quite a knack for walking and reading at the same time, if I do say so myself. Navigating with this rolling bookshelf seems like it would be quite a challenge, though! I much prefer a more relaxed take... check out this second picture.