The fifth of those trips that don't happen sounds bad to me. Does this mean that, for example, people are not going to get groceries because they can't carry all of that on a bicycle or a bus?

From the article, "Ride-hailing users have higher personal vehicle ownership rates than those who use “transit only”: 52% versus 46%." This point seems like a non-point. First, that's not a very big gap. Also, Do richer people pollute less or congest less than poorer people? I don't think so, so having the car in the garage is better than having it on the road, and no different than not having it at all.