There will certainly be areas where such bottlenecks exist, and so we can assume that there will be types of problems we can't expect exponential improvement to continue once it hits those bottlenecks. But the point is that self-driving is a poor example to use to judge what we can expect to see in fields that are less constrained by turnaround times and safety. Not least because "anyone" - though certainly constrained by costs - can try to do novel things with large language models. Very few can try to do novel things with self-driving because they have nothing realistic to test it on at scale.