Wow, how easy to mow a flat smooth lawn.  Fun, too. Warning, though, ruts in the lawn will make this thing get stuck.  It doesn't "glide" over the top of anything.  It HUGS the earth.  But, it gives a great look.  Another warning -- you can't let grass grow too long; this will only work on already short grass. Think of needing a "trim" instead of a "cut".  If I wait to long to mow, it doesn't cut the grass, just bends it.