I think it is great that you are considering this so far in advance! You have plenty of time to consider your options and make a plan so everything will go smoothly and with a minimum amount of stress for your snake!

I'm probably less of an expert than you considering I only brought my baby bp home 2 days ago! However, having one more person to bounce ideas around is usually not harmful, and my experiences when I was in college with a 29 gallon fish tank seem at least somewhat relevant. Here are my thoughts.

With my fish, which normally needed to be fed daily and a partial water change weekly, I'd leave them for up to a week. I figured going a little hungry was better than all the stress of moving twice in such a short time. A snake can probably be left safely for even longer periods as long as there is an adequate water supply and as long as you are sure the temps will be stable. In fact, as long as the humidity is good, the snake might survive without water since they don't drink a lot, but unless someone far more qualified than me says it is ok, I don't recommend trying that. If you live in a dorm, it is likely that the heat will be turned down and they may even turn off the power, so ask about that before you decide to leave your snake behind.

I checked your other posts which say you are using a 20 gallon glass tank. While this isn't exactly easy to move, it isn't all that hard either, as long as you have room in your vehicle. So one possibility is to disconnect everything, pile all the accessories in a box, put snakey in a safe place for travel, and reassemble when you get home. You'll have to pay close attention to the temps until you are sure they are stable, because of the different environment outside the tank may mean you need more or less heat added to get the desired temps. But, your familiarity with the setup will probably help you get the temps stabilized faster than with a whole new setup. Plus the snake will probably be less stressed cuz it will have familiar surroundings.

If you decide against both of these options, I'd recommend going with some sort of plastic tub. I say this only because there seems to be a very strong concensus on this board and across the web that it is easier to keep BPs at the proper temps and humidity in bins than in glass tanks. I have no personal experience with this, but there is plenty of information out there, and it seems relatively inexpensive and easier to do compared to a glass tank. I think the extra effort is worth it for the pretty displayof a glass tank, but maybe not for a short term situation.

As far as actually transporting the snake during the drive, it seems that 2 hours is not a big concern if you use common sense. Make sure you avoid extreme temperatures (hot or cold), don't make any extra stops which will lengthen the time, help the snake feel secure by keeping it dark, etc. An insulated lunch bag can help keep your snake's temperature more stable, but don't make it air tight. I used to use an ice chest for transporting my fish. I also like the lap idea someone suggested, but I'd say not the driver's lap! Acceptable travel containers that were suggested to me when I was asking about bringing my baby home ranged from a pillow case or similar bag, to a rubbermaid/tupperware type container. Something that fits it snuggly will probably help it feel more secure, just like with hides. Make sure you are all ready to go before you pack up the snake, and get it in its new enclosure as soon as possible when you arrive.

One more thing to think about is that both the move home and back to college will be stressful to the snake and you should probably follow the rules about not handling it or feeding it right away.

Hope all this helps you think it through and make the best decision!