I really wasn't sure what the "walking" car would be, but that's got to be the funniest steering mechanism I've ever seen! 😁 You could probably do an entire video on different "walking" wheeled car designs.
I kind of already did that: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-UBC74oZu7-Y.html But that design isn't motorizable, so maybe I'll consider to design another one
I guess that's similar to the first one. Instead of the rotating wheel on the back, you could add 2 more wheels connected to the front wheels with gears.