I'm not convinced by this argument. One factor he isn't addressing is that cars may be getting more reliable, as in people drive them for longer. My grandmother for instance switched to Toyota 25 years ago and has two cars that whole time.

Another problem I see is that car sales aren't necessarily in s huge of downturn as he says. 2016-2017 according to his own graph shows massive growth and it looks like the UK has returned to 2016 numbers. Considering the weaker pound and the fear around Brexit, this doesn't seem to me to be all that bad long-term.

China and Turkey are both having economic downturns along with Britain. I wonder if he could make the same argument while using economicly stable countries.

One thing I'm thinking that might aid his argument is that the baby boomers are beginning to get old enough to stop driving or dying. Could that harm sales? Also I'd like to see how Lyft came up with the 300k riders who stopped owning a car.