In message , David Hansen
writes

Even if it was under full power the extra force that provided was not
enough to cause the damage. If it was then HSTs would be damaged every
time only the rear power car is working, which happens from time to
time. The forces the power cars produce are minor compared to the
forces involved in a crash.
I suspect the shape of the leading power car to have something to do
with gathering up the car instead of just shunting it to the side.
This is not a troll and unless you can add to the debate please don't
respond.
--
Clive.