And also from some angles it might totally mess up depth perception, kind of like dazzle camouflage, so other drivers might not be able to avoid it as well as they could avoid a car painted in a color that gave better depth cues.
Maybe in a hypothetical future where you don't need human beings to be able to see and predict cars' position with their eyes? :-)
> This show car is destined to remain a one-off because of the enormous difficulty involved in making Vantablack paint suitably durable for everyday automotive use. The car paint needed for the world’s blackest black would also be extremely expensive, not to mention questionable in terms of road safety due to its level on the absorption spectrum.
It would also probably melt the interior in summer.