These people are so fucking dumb. Let me do some quick math.
Any given week day, at peak hour, any train from Madrid's metro can be carrying around 500 people. Let's consider that some of them may be traveling together, so let's say that being optimistic, they could be divided in 250 robotaxies.
Now, that's one train. At any moment there are between 10 and 20 trains going in that line in that same direction. And as much in the opposite. That makes it between 5k and 10k robotaxies. To cover a single metro line
Madrid has 16 metro lines. That makes it between 80k and 160k robotaxies just they could move the same order of magnitude of people our Metro moves in any given workday. If you want to cover really busy moments, like big sport events, you need twice that amount (the nominal max capacity of metro trains is around 1200 people per train, and believe me, I've seen them so full that you couldn't get in pretty often).
That's just for the subway. Local commuter trains and city buses, combined, are actually carrying more people daily than the subway. So let's double the robotaxies fleet again if they want it to "kill public transport". So you need between 350k and 700k robotaxies just to be able to kill the public transit of a single major city.
That's about 1/6th of every Tesla ever made. Just. For. One. City.
