Not all vehicles are fast. Not all of them look streamlined. But there is a particular vehicle type, that is slow and looks very differently: it's called street sweeper. Try it and believe me: road cleaning was never such a fun! It does a unique task - it cleans the dirty roads of a city. It's is not only a commodity, but an important health issue as well. Cleaning the road from trash requires a different kind of cleaning skill set. Of course, when you are driving, speed is very important. But