Example vehicles with functional implements are provided. An example vehicle includes a driving assembly to propel the vehicle at a vehicle speed, a functional implement assembly to actuate a functional implement at a functional implement speed, a vehicle speed sensor to monitor the vehicle speed, and a controller to control the functional implement assembly to vary the functional implement speed proportionally to the vehicle speed. Another example vehicle includes a driving assembly to propel the vehicle at a vehicle speed, a functional implement assembly to actuate a functional implement at a functional implement speed, a functional implement load sensor to monitor a load delivered to the functional implement, and a controller to control the driving assembly to vary the vehicle speed proportionally to the functional implement load.