Mark Rober just set up one of the most interesting self-driving tests of 2025, and he did it by imitating Looney Tunes. The former NASA engineer and current YouTube mad scientist recreated the classic gag where Wile E. Coyote paints a tunnel onto a wall to fool the Road Runner.
Only this time, the test subject wasn’t a cartoon bird… it was a self-driving Tesla Model Y.
The result? A full-speed, 40 MPH impact straight into the wall. Watch the video and tell us what you think!
They’re not reading speed limit signs; they’ll follow the speed limit noted on the reference maps, like what you see in the app on your phone.
There’s a lot of cars that check via camera too to double check, for missing/outdated information and for temporary speed limit signs.
Yikes, there’s a 25 around here that shows up as a 55 in Google Maps.
Also a 55 that goes down to I think 35 for just a moment when it joins up with a side road. I wonder what a Tesla would do if it was following that data.
The same thing a Tesla always does: behave erratically and dangerously.