If memory serves me right, it's still used in Germany for trips outbound from FRA. You buy a ticket with a train somewhere → FRA leg, and an airplane FRA → somewhere-else.
It gets even better. One of the big Software Systems at Fraport has a „Flight“ class, which exposes the method „isTrain“…
On another german airport the same class was extended by a „isTruck“ method for parcel trucks…