Started building snowmobile engine powered lawn mower and after a few weekends of building I noticed it was looking pretty good and how fast i think it will go and then be for I new it I was checking out what the fastest lawn mower is and its fast its 143 mph but I'm going to see what mines got and if its even close and if it is with in 50 mph when I test mine I'm going to give it a shot and try to beat the record and see if I can get to 150 mph don't know in less you tri lol!!!!