Modest as I am, the decision has been made to build an outdoor autonomous robot which will mow my lawn. :-D
The garden is 50*50 meter (150*150 feet) with the house somewhere in the middle, completely fenced off with a gate. 2/3rd covered by grass in different sections separated by driveway,paths/house/garage. Altitude difference is 6m (18 feet) between lowest and highest point. Maximum slope is 30 degrees (containing grass). Soil, no rocks.