We have seen a bunch of cool extreme wheelchairs over the years. The Ripchair 3.0 is still one of our favorites. It is an off-road wheelchair with a customizable design. It has a 29HP engine and max speed of 10 mph. It features a 10″ ground clearance and 60% climb rate.
You can add a hunting rifle holder, cup holder, LED lighting, and other accessories to customize this wheelchair. More info is available here.