Roland Perry wrote:
In message
, at
06:30:52 on Tue, 15 Jul 2008, Mr Thant
remarked:
Batteries aren't part of the base spec. It does say "Some level of
onboard energy storage may provide an optimal solution overall"

Vary large elastic band?
It's a long time since I saw you post such a sensible proposal.

You wind it up on braking, and it could occupy all that dead space
between bogies. After all you can make airplane fly by that method...

Jim Chisholm