Here is a robot tank that comes with everything you need for programming off-road missions. The WT600S Robot Tank can climb slopes up to 35 degrees. It has max speed of 1m/s. It can overcome obstacles up to 2.8 inches. It has a high carbon steel construction with electrostatic paint.
The robot has 2 x 12V LED headlights. It has load capacity of 66.1lb. You can find out more here.