Exactly. With mixed use it's easy to imagine a couple (or even small family) that would normally have two cars in LI, could walk to LIRR for commute, walk to nearby restaurants, walk for groceries, and maybe keep one car + parking spot for other uses. That's a win for traffic/environment/affordability. And even car free is totally possible with that type of development. Not a new concept: https://en.m.wikipedia.org/wiki/Transit-oriented_development