SEMA may be going on, but this incredible machine isn't from the event. Nope, this custom Subaru Impreza WRX STI is from one enthusiast's mind. What started off as an awesome 2013 WRX STI sedan with a 2.5-liter four-cylinder engine making 305 hp and all-wheel-drive just became a whole lot better without a roof. The STI was already the ultimate daily driver with its amazing all-weather performance, great power and rally history, but this topless model adds the ability to enjoy unlimited headroom. This convertible is on sale for $32K, which is a steal.