- we've just spent £130million upgrading the 3rd rail power system;
- it would cost about £2.5billion to convert it;
- it would cost about £200k to convert each 4-car unit using the system and there are hundreds of those;
- the conversion would transfer the weather problems from ice and snow to high winds;
- we only get, on average, a few days of ice disruption each year.
Thinking about it, why would we ever do it, regardless of a recession?