1. A vehicle capable of manned operation, the vehicle comprising: (a) a first subsystem, comprising: a computing medium having computer readable code embodied therein for selectively controlling the vehicle, the computer readable code comprising: (i) code for causing the vehicle to be autonomously controlled without operator intervention by adjusting a speed of the vehicle based on a moving object; and (ii) code for enabling autonomous operation of a first vehicle input device in combination with operator control of a second vehicle input device by adjusting a speed of the vehicle based on a moving object; and (b) a second subsystem in electrical communication with the first subsystem, the second subsystem comprising: a plurality of actuators for manipulating one or more devices of the vehicle; and a controller for controlling at least one actuator in response to an instruction received from the computing medium, wherein the controller, in response to an instruction generated by the code for enabling autonomous operation of the first vehicle input device in combination with operator control of the second vehicle input device, autonomously controls a first set of at least one actuator and contemporaneously controls a second set of at least one actuator in accordance with operator input, wherein at least one actuator of the plurality of actuators is coupled to the first vehicle input device by a mechanical linkage or a mechanical transmission, wherein the controller is configured to detect a disassociation between the first vehicle input device and an associated one of the plurality of actuator and to interrupt autonomous control in response to the disassociation, and the disassociation comprises a break in the mechanical linkage or mechanical transmission that couples the at least one actuator of the plurality of actuators to the first vehicle input device.