A true sports fan will go to every and all extents to express just how much he or she supports his team. A fan that pumps purple and gold or blue and orange or silver and blue will buy shirts and mugs, get themed donuts, lie out matching decorative pillows, and even draft an entire fantasy team of strictly that team's players. It's just that in-season mindset that nothing else matters besides the team. One of the ultimate ways to show everybody which squad you rep is by turning your car into a mobile billboard. Some use them as tailgate vehicles, and some just use them as a way to show how much they care. Check out these 20 NFL Fan Cars.