Instead of a lawn tractor this Robot Tractor might be just the thing you need around the yard. It might need a bit of weight added to the design to allow it to pull anything substantial but that shouldn’t be an issue. I an see it being a great help to landscapers needing to pull around carts of material such as mulch, sod, hand tools, etc. If there are a few people working on the same site you would be able to drive it over to your fellow worker without having to physically walk there yourself. With high precision GPS this might be able to be used by farmers who need to perform the same tasks daily such as bring a load of feed from one barn to another. The build video shows the thing in operation at the 4 minute mark.
Thanks for the tip Mark.