Yes but that's a bus. Public transport is intrinsically a worse and less convenient experience than having a private driver.
Plus the train has tables, 240V sockets, wifi (which selects the best from several different providers, so better coverage than my phone), all of that. There are seats available from our station on pretty much every train, and the journey time is more reliable than the car.
The vast majority of people who experience motion sickness in cars will also experience motion sickness in trains.
It took years for me to really understand why so many people don't love trains like I do: motion sickness makes the freedom, relaxation, and ability to focus on work I experience not universally shared.
I'd be genuinely interested to know stats for car and train motion sickness, though: I haven't found any on a quick Google. Motion sickness in general appears to be ~30% of the population. Obviously it's not a simple scale: my wife, for example, will get car-sick (without reading) on a fast, bendy journey more easily than I will; neither of us get train-sick; I get sea-sick much worse than she does.
(Let me just pre-empt someone's example of some billionaire somewhere who loves catching buses, I'm sure there's one out there somewhere.)
For what it's worth, the Dutch Prime Minister Mark Rutte cycles to work just like most everyone else in the Netherlands.
Netherlands, of course, being an example of a place having public transport which is exceptionally good and quite often more convenient and more practical than having a private chauffer.