[Guardian]

Guardian: what you need is a mower with one of those bio-batteries, that way you can feed the grass directly into the battery and it'll convert the complex carbohydrates and sugars into electrical power

That would be cool, for cutting other peoples grass. I mulch it when I cut it and lay it back down for nutrients. I am trying to build up my soil for gardening, etc. 

Once I get solar panels, the battery cost would be negligible anyway. Just need to get cheap solar.