here is a street cleaning cart. this one is special because it is a convertible. ideal for those warm summer months (or crisp october mornings)

and here is a steam roller. i ran across the road in front of this one (it wasn't moving very fast) but i did wonder what would happen if i tripped and fell in its path. i imagine they don't do emergency stops very well.

notice how the steam roller is stopped at these traffic lights. if you are driving a steam roller you don't need to stop anywhere.

and where's the steam anyway. why do they keep messing with stuff