I think several people are, yes, and are ignoring the reasons people use rail even if they have a car. A number of people are stating "rail is dead, they won't return" and it's just rubbish.
Sure, if
@miklcct for example had a car he wouldn't be doing as many of the esoteric and awkward rail journeys as he sometimes does (and his stress levels would be well down), but driving into London, Manchester, Birmingham or Liverpool* is just grim, and most people simply won't consider doing it regardless (if the trains are in a mess they just won't go at all, hence the big impact on hospitality of the pre-Christmas strikes). And the vast majority of rail journeys are into the big cities and back - rural branch lines and intermediate journeys are just tinkering round the edges.
* Even near leafy Aughton Park, you go to Liverpool by train, you don't take the Jag or Rangie** (or the Tesla these days?). High frequency urban and InterCity services are totally different in their custom to branch lines.
** OK, maybe I'm overdoing it, my parents have a Vauxhall Mokka, albeit a brand new one, and my sister has a Zafira. But car ownership is as close to 100% as you're going to get, basically the only non-car-owners are those not old enough to own one and those medically disqualified, who have received a ban due to a transgression, or who have given up due to their age/infirmity even if still legally allowed. That is, basically everyone who wants a car and is allowed one has one, and most people want one.