Assuming we exclude mass transport, what do you think the values would be or do you have any contrary data? I know that most people I'm aware of all drive their car by themselves to their work, there was very little carpooling.

The issue is no reliable data can easily be found ( closest for me was this -https://www.statista.com/statistics/183505/number-of-vehicle... ) suggesting that neither of us actually knows. Sounds to me like a bad reason to base an argument( or policy on ).

- I know that most people I'm aware of all drive their car by themselves to their work, there was very little carpooling.

how many of those are suvs? and then we go bk to use case. there is a reason soccer moms exist. u focus on work commute and likely on metro areas only but fail to account for other activity types

Here some data - it's 1.5 people per car in one study[1], 1.45 in another[2]. So a little higher than my assertion, but not much at all.

[1] https://css.umich.edu/publications/factsheets/mobility/perso... [2] https://www.eea.europa.eu/data-and-maps/indicators/occupancy...