I've always wondered why the parents aren't worried about /standing out/ and thus being more likely to be considered as a target? If they're truly risk adverse

I've always wondered why the parents aren't worried about /standing out/ and thus being more likely to be considered as a target? If they're truly risk adverse I'd also expect those drivers to either migrate right over to the HOV lane (far left) and use cruise control at the speed limit... or do something similar in either the non-passing lane or the second lane from the right (next to the merge lane instead of in it).