Dont know why you're going to Ithaca NY, but i often drive up from NJ to Ithaca(my Alma Mater) still have not made it in one go as temperatures have been cold. Also there is no superchargers in Ithaca, so i stop in Binghamton to charge before i drive the rest of the way to Ithaca.
There is destination charging at Ithaca, max speed ive found is the Lama building on Triphammer by the mall(48amp). Otherwise all the rest are 30amp, or if you have Chademo, downtown.
good luck!