It appears that 200,000 people live in Geneva, and daily there are 700,000 "boarding passengers" in Geneva, which I take to mean that if someone transfers a bus, they get counted twice. That said, I suspect based on these numbers that the vast majority of the population are also public transit users.

https://opendata.tpg.ch/pages/accueil/

Geneva Metro area has a million people. Still could be a majority of people using public transit. If true, I suspect it's not the vast majority though Switzerland as a whole is still majority car commuters I think.