A DARPA robot tank is a self-driving vehicle that has been engineered as part of DARPA’s RACER (Robotic Autonomy in Complex Environments with Resiliency) program, and it is quite formidable.

Some have only basic sensors and parts installed to simplify construction and cost. Others let users program the robots but with limited functionality through custom block-based programming.

China's finding new uses for Cold War tanks, by turning them into robots for dangerous tasks like target practice.