In most of the given examples, humans have little control of the environment. We are, in fact, trying to use autonomous vehicles to explore.<p>In the case of cars, humans can change the physical environment to meet the needs of the car. Additionally, the car may be able to avoid a situation  that it knows it doesn&#x27;t handle well (e.g. avoid complicated intersections).<p>In the one case of an environment where we have some controls (air travel), it is more difficult to &quot;pull over&quot; as compared to a car (as other commenters have noted).