If it was a vert id say "driving in the snow.... really....", but a coup. Keep it. Like they have said snow tires make a lot of difference.
And for bad snow days in and around NYC, traffic will be a nightmare no matter what vehicle you have. So then it will be how do you get to the train station / metro.
One thing for sure. Once you make it to a train station/metro you can get anywhere in the city

__________________
2006 BMW 650i Sport/Premium Package
Spacers, AC Schnitzer Pedals, AC Schnitzer Mats, 21" Rims (BMW 750), iPod Integration Kit, Two Tone Beige/Black Seats Mod, Angel Eyes Light Upgrade, Fog Lights Light Upgrade, License Plate Lights Light Upgrade, Wind Screen, Caliper Covers. Next Mod- Illuminated Shifter & Running Boards