Everyone can hear you, see you, and most importantly, see your body language. Go a little further with hardware power and have the computer place clothes on you. Wear a ratty tshirt in your home but wear a nice Armani suit in the meeting. Some of this tech is here already but just nowhere near as fast as it would need to be to achieve perfect, virtual telepresence.
No more garages and driveways. Neighbourhoods will look a lot nicer, and maybe this will foster community engagement? House design will change, maybe with more multi-family units.
Much narrower roads, with real estate that's now sacrificed to roadway given over to parkland or housing.
Maybe cars will move partially or fully underground, travelling in large-diameter pipes. Like a sewer. Save the surface for people and bikes.
Maybe I can own my own "car interior", a custom box that I can commute in every day. It won't have wheels or an engine, so when I want to go somewhere I'll summon an auto-auto that picks up my auto-box and ferries it around.
We conflate two separate things when we consider what cars _are_ - a way to transport ourselves and things from place to place AND an extension of our home. The idea of home extension will be more difficult to break than the idea that you have to drive everywhere.
I'll even go as far as predicting that this technological advancement will be a personal (or family) aerial vehicle[1] that makes commuting as easy as vehicular travel, but perhaps safer, and definitely faster.
In other words, I think the automobile will diminish in quantities, much like the horse, not because people need them less, but because something better comes along.
1. This could be a gyrocopter-like device or a drone-like device, but will likely not be a fixed-wing "flying car", especially beyond the extent to whicih a V-22 Osprey is a fixed-wing.