There is a project for doubling the tracks in the city center, that is on a good way to become more notorious than the Berlin airport: they are talking about it since the '70, they started working in 2017, with planned opening in 2028 for ~3B euros, and now they are talking about opening it in the late '30 with an estimated cost of more than 7B euros. 1B for each km of tunnel, that's madness.
Without it, we cannot have fast connections to the airport (currently 40 minutes away from the city center), and cannot increase the number of trains, currently running in a 20-minute cadence because 7 lines meet in the city center, so 7 lines on 1 track.
Another thing I don't understand; why Italy and Germany aren't to start building the access tracks to the Brenner Base Tunnel (BBT)?
BBT is incredibly on track with all the deadlines, so if they really open it in 10 years, we will be able to do Fortezza - Innsbruck at 250km/h, and then Munich - Innsbruck at <200 km/h, as Fortezza - Verona. That's simply ridiculous.
I don't own a car and try to fly as little as possible, but it is quite difficult for distances that, frankly, should be a no-brainer.