I assume you mean you have worked with an SDI shop for your pool sessions but cannot get to where they do the OW dives because you don't have transportation there. If you could get to the OW site, they would take care of you, right?
My first thought would be to ask the shop with which your worked for suggestions. I would think they would be more than willing to help you find a way.
My second thought would be to car pool with other students. I assume the dive shop would help with that.
My third thought would be to rent a car, assuming you have a driver's license and meet the age requirements.
My fourth thought is public transportation. When I was in college quite some time ago, I was home for the summer in the Catskill region of NY. My girlfriend got a summer job in Belmar, NJ, and lived a block from the beach. Not having a car, I took a bus. I am sure it can be done today.
My fifth thought is that if you are going on a vacation to a dive area, you can get a referral and have the OW dives done there.
Mu sixth thought is that if you scroll down on ScubaBoard a bit, you will find a regional travel and clubs section. Go to the NY one and see if you can find some help.
My seventh thought is that if none of my other thoughts work for you and you are completely unable to get to a dive location, then there really isn't any point in getting certified.