I see this video has got some age on it so I want to ask, how did the drive motors hold up? I need something exactly like this for my wood yard operation and I'm trying to figure out which way to go. That thing is cooler than cool, I love anything with tracks and the smaller the better!I am totally impressed with this and the tracks? Thumbs up. Quality workmanship and talent. never stop at just this project my friend. God Bless.