Abstract: A vehicle control system includes a vehicle controller and a portable user device. The vehicle controller is configured to control operation of a vehicle component of a vehicle. The portable user device is configured to wirelessly connect to the vehicle controller and facilitate providing a command to the vehicle controller regarding operation of the vehicle component from an exterior of the vehicle.

Abstract: A mixing drum includes a body defining a head aperture and a discharge aperture opposite the head aperture, a head coupled to the body and extending across the head aperture, a bearing member coupled to the body and defining a bearing surface surrounding the body, and a mixing element positioned within the volume and coupled to the body. The head and the body define a volume configured to contain a fluid mixture. The mixing element is configured to drive the fluid mixture toward the head when the drum is rotated in a first direction. The mixing element is configured to drive the fluid mixture towards the discharge aperture when the mixing drum is rotated in a second direction opposite the first direction. The head is made from a first material, and the body is made from a second material having a lesser density than the first material.