Bugs may not have wheels, but some of them form poop into a ball to roll it around. And they can navigate by the stars. http://phys.org/news/2013-01-dung-beetl

Bugs may not have wheels, but some of them form poop into a ball to roll it around. And they can navigate by the stars. http://phys.org/news/2013-01-dung-beetles-stars.html http://phys.org/news/2013-01-dung-beetles-stars.html