A quick release electric throttle assembly connected to a supplemental electric propulsion system, wherein the propulsion system may be moved from one vehicle to another, and the throttle must be correspondingly moved among the vehicles as well is disclosed. The quick release interface may incorporate a disengaging and disengageable electric connection to permit electrical wiring to be quickly plugged and unplugged from the hand actuated accessory. The throttle may be further be configured as a low profile throttle, such as having a flat surface with at least one button by which the throttle may be actuated. The throttle may be secured and released from the control surface of a vehicle by wrapping the laminar flexible sheet at a desired position and wrapping a Velcro like strap over one another about the manual control surface.