Rinspeed is a Swiss speed shop that is perhaps best known for making rather outlandish concept cars, from glorified golf carts to Bond-inspired amphibious autos. And now the company has unveiled its latest creation, the Dock+Go, a "backpack" for your Smart Fortwo ED. Essentially, Rinspeed has modified an existing Fortwo EV so that it can connect an extra axle to its derriere, providing
