Mark Rober wanted to know if Tesla’s self-driving car could be deceived in the most cartoonish way possible. The former NASA engineer and YouTube sensation built a wall designed to trick a car.

The Radcliffe Wave inside a cartoon model of the Milky Way. (Credit: Ralf Konietzka, Alyssa Goodman, and WorldWide Telescope) At first glance, the night sky appears still. But in reality ...