If you go to Ikea in Hamburg, Germany, and buy a bookcase or a rug, the store will loan you an electric cargo trailer so you can easily take your purchase home without using a car. (The service, free for three hours, is also available at Ikea stores in five other German cities.) The trailer, designed by a company called Nüwiel, attaches to any bike or can be guided by hand down the sidewalk, carrying all of the weight by itself.
Image: courtesy Nüwiel
