Kitty Hawk Flyer
Google founder Larry Page's flying-car company Kittyhawk went through a lot of wacky designs during its eight-year run, including the once-promising Flyer.

Last September, Larry Page's flying car company Kittyhawk, closed its doors. It was a stunning failure for what was once the vanguard of the eVTOLs (electric vertical-takeoff-and-landing aircraft) industry.

The company was started in 2015 and explored a range of concepts for eVTOLs over its lifespan. Backed by the bottomless pockets of Google's cofounder, and run by Sebastian Thrun, the "Godfather" of self-driving cars, it seemed that success was all but assured for Kittyhawk