I rather doubt anyone will be swayed by these findings. First, there's no special insights here into hidden costs of driving, and second we all have a good idea how much commuting costs, both ways. Who hasn't spent time while sitting in traffic figuring this out? Who didn't think this through before they bought a house or rented an apartment?
There are simple ways to make huge progress on the issues of traffic congestion and pollution, but they're not all politically palatable. My own view is we should stop letting people deduct their mortgage insurance payments (and I have a mortgage). You really need to live on a half acre plot, fine. Just don't make me subsidize it.
Notice, also, that the story is focused on the gain from one person switching. This ignores the network effect. If everyone around here used the train, it would make sense to have a denser network. That, in turn would lower the relative value of owning a car.