Here's what a real flying car could look like

Google co-founder Larry Page is personally investing in flying cars, according to a $4.

Page has invested in two separate flying car start-ups, Zee.Aero and Kitty Hawk. There's not much information on what exactly the start-ups are working on, aside from whatever we can glean from $4, which like all patents are subject to change.

But there are other flying car start-ups that have been more public about what they're working on. 

Scroll down to see what flying cars could look like in the future.