The 4th of July brings BBQ grilling to mind. The above video is a review of a robot that cleans the grate of a BBQ grill. The brushes that keep falling off adds a bit of humor to it all. Even on sale these Grillbots cost $90 to $100. Seems like a mighty steep price to do away with your gill brush, but to each his own. You can follow the link if you have a hankering to buy one.