1. A system, comprising a computer in a vehicle, the computer comprising a processor and a memory, wherein the computer is configured to: perform one or more operations of the vehicle without occupant input; store data relating to a baseline state of a specific occupant; collect data relating to a current state of the specific occupant; perform a comparison of the baseline occupant state to the current occupant state; and modify a parameter to control at least one of the one or more operations according to the comparison, the one or more operations including at least one of a speed, deceleration rate, acceleration rate, distance from another vehicle, and turning rate of the vehicle.