James wrote:

You're proposing a multibillion pound railway and you're worried that
lengthening suburban platforms would be too expensive???

I agree with James. The plan is hopelessly unrealistic and it's probably
a hoax.

How could it be a hoax? He never claimed the plan was anything other
than his own, and ISTR Ken was making those sorts of comments around
that time.

Having said that, hopelessly unrealistic plans can be quite fun. I
have my own unrealistic (but hopefully not hopeless) crossrail line
plan:

http://homepage.ntlworld.com/james.dowden/xrail.htm

Well I for one am glad it is hopeless. Why would passengers from
Dartford and the Sidcup Line or Orpington want to go to Lewisham then
back to Blackheath then loop round the docklands?