A car or truck that is self driving. Following are the five stages of automation for vehicles. Each stage includes all the functions of the previous ones. See self-driving car
Stage 1 - Anti-lock brakes (see ABS
Stage 2 - Warnings (low tire pressure, open doors).
Stage 3 - Safety systems. See adaptive cruise control
, collision avoidance system
, lane departure system
, blind spot monitoring
and adaptive headlights
Stage 4 - User-initiated self driving like the autopilot in an airplane cockpit; for example, Tesla's Autopilot. We are currently at this stage in 2019. See self-driving car
Stage 5 - Self driving. No steering wheel.