This is a serious problem and something that, as it happens, magic tricks have been used to study. The issue stems from a visual illusion—the "illusion of absence"—that's especially strong within a moving vehicle. link.springer.com/article/10.1...

The illusion of absence: how a common feature of magic shows can explain a class of road accidents - Cognitive Research: Principles and ImplicationsThe purpose of the present note is to draw attention to the potential role of a recently discovered visual illusion in creating traffic accidents. The illusion consists in a compelling and immediate e...link.springer.comTK_Wharton

I did not know about the A-pillar blind spot problem (gift article) www.nytimes.com/interactive/...