We've just got back from southern Germany, where it was too snowy and icy to cycle.
The Bavarians, though, see such weather as an opportunity rather than a threat. This was what we saw on the local BOB train out of Schliersee. Each carriage here has space for twelve bikes, and about as many snowboards or sets of skis.
Does this count as skis or a bike (picture)? Not sure, but it certainly isn't a wheelchair.