Frank Krygowski, 2017-12-04 17:08+0100:
Hmm. To solve that problem, could you bring along your own S hook? Make
one end big enough to handle your tire and rim, and hang the other end
from the train's hook?

That may not be possible, because train hooks position is a compromise
between not being too hard to reach and yet having the entire bicycle
off the car floor. If you add your own hook to that, your bike will be
about 10 cm down, and the rear wheel may touch the floor, resulting in a
very less stable position.

--
Tanguy