"Charles Ellson" wrote in message
news
On Fri, 11 Nov 2011 08:35:12 -0800 (PST), allantracy

To that end, perhaps Overground services from Euston could reverse and
continue in an Amersham direction.

You can't run 3rd-rail stock on the Met.

Not an insurmountable issue though, as seen on the Bakerloo and District,
and the new S stock has apparently been built to allow use on the raised
third rail supply voltage that NR are about to provide around London...

Paul S