Somehow, two seats fit inside. Prop Department via YouTube Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. A YouTuber armed with a 1988 Ford Festiva and a workshop full of lasers may have created the world’s thinnest street-legal car—-though it required some serious work to get it there. Tyler Fever, who runs the YouTube channel Prop Department , took the already tiny Festiva and chopped it to pieces, ultimately creating a roughly shopping-cart-sized contraption that resembles something out of The Flintstones . Somehow, Fever even managed to fit two seats into that tiny vehicle. More surprisingly still, he claims he managed to get the little death trap fully insured. All of this, he says, was part of an effort to make what calls the world’s “most pathetic car” even more ridiculous.  “We’re going to make it even smaller and more pathetic looking,” Fever says in the video.…