A robotic vehicle may include a power module and a working module. The power module may include control circuitry configured to execute stored instructions to direct operation of the robotic vehicle on a defmed area, and a drive motor for propelling the robotic vehicle responsive to control by the control circuitry. The working module may be configured to perform a function with respect to the defmed area responsive to being propelled by the power module. The working module may be one of a plurality of interchangeable working modules that are attachable to the power module. At least one of the interchangeable working modules may have a different function than the working module.
