While it is possible to build a consumer lightfield camera (Lytro was one example), they aren't as magical as you might think until you get much larger lens sizes than people are going to tolerate to get appreciable zoom range.
I did a bunch of manual creation of light-field photos over the years.[1] To get interesting compositions, you need an effective lens diameter of about 30 cm in diameter or more. To get super-resolution good enough for zoom, you're going to probably need something that size.
Not disputing the feasibility of light field imaging. That approach really doesn't do anything for the use case the camera Nikon/Mitsubishi are showcasing. Light field cameras have low resolution for their sensor sizes, lower optical efficiency, are expensive to manufacture, require processing that would make this a bad fit for the near-realtime ADAS functions you need for automotive machine vision, and have no advantage when it comes to favoring one part of the image in terms of angular resolution.
I did a bunch of manual creation of light-field photos over the years.[1] To get interesting compositions, you need an effective lens diameter of about 30 cm in diameter or more. To get super-resolution good enough for zoom, you're going to probably need something that size.
[1] https://www.flickr.com/photos/---mike---/albums/721777202979...