The Solar Tree designed by Gurdeep Sandhu, it uses just a small space in your backyard, it can wing-out the panels to absorb sunlight and fold back when not used. You can uproot and move it, or even upgrade the panels when needed.
Czeers MK1 is the world’s first solar-powered speedboat, this 10-meters speedboat can go about 30 knots (about 55 Km/H) with powered from 14 square meters solar cells. No price announced yet, but with something looks like carbon fiber, it would cost a lot.
Source: Czeers