[hkpack]

Large infrastructure projects always take decades.

Look at the railroad development in EU for example. You have to invent a lot of tech (signaling, communication between trains, interoperability with old systems), build a lot of infrastructure, train a lot of people and roll it out at scale with the goal of zero accidents.

It is just impossible to do quickly.

[giantg2]

Yeah, but some of the next generation upgrades have already been successfully tested at some facilities and it's just a problem of updating the rest. Sure it will take years, but it shouldn't take a decade after successful testing in the field.