Meh, I regularly take the Adirondack line NYC/Montreal and it's a regular old Amtrak that creaks its way through upstate NY. It's a lovely trip and it beats the hell out of having to trudge through customs. It's 10 hours, but it's also only $190 (or so), and it's far more conducive to working than being in the air.
A plane trip is only three hours in the air, but all said it's probably six to seven hours out of the day given airport time and horsing about at customs. Tack on another $200 in cab fare for round trip rides to airports and I'm paying an extra $300 or more for a far worse experience.