I had to show you all Lucas's All Terrain Sample Collector.
Designed and built for the LEGO Mindstorm Explorerbot Challenge
He spend about 2 week building, testing, and adjusting it and then a couple days getting the program sorted.
It is designed to go over all terrains to collect samples of mulch, dirt and pebbles.
Here is a link to his Legoboys blog video to see this machine working.
Very proud Mama moment here!! :D