On 2010-03-18 16:25:07 +0000, kev said:

HS2 are proposing an interchange between High Speed 2, Crossrail, and
all services out of Paddington (including the Heathrow express), at
Old Oak Common.

snip

Layout of proposed station (page 83):

http://www.dft.gov.uk/pgr/rail/pi/hi.../chapter3a.pdf

Looking

at the diagram, OOC station is right next to North Pole depot,
which has lain empty since Eurostar vacated it to move to Temple Mills.
Suddenly it looks like the depot could once again be used for TGV-type
train maintenance. All that would be needed is a connection from HS2
on the other side of the GWML, and since HS2 will be in tunnel east of
OOC, a spur in tunnel coming up inside North Pole would be feasible.
Alternatively, a flyover from the station box, à la Stratford International,
could cross the GWML and come down inside the depot.