It's more than a mile from the top of that fanciful Union East orange box, where the future HFR line passes by (over a creek at the edge of a woodlot...) to the 407 transitway. If my reading of the Greenbelt maps is correct, most of this is protected countryside, as are the places, in Markham and inside the Rouge Park, where the railway does actually cross 7 and 407. So isn't this a big nothingburger? If there's ever an actual airport, a rail spur could make sense. If HFR wants a shoulder station in Toronto (Eglinton seems to have disappeared) the crossing on Sheppard seems like a better idea, and it has a plausible shot at rapid transit in the next 20 years.