Okay, this is a semi-silly question, but I have to ask... ...I'm a poor grad student, and only have a bike with bike bags as a means of transportation. Within the next however-many days, I'm going to be peddling my way up to the Mac Store to grab a new MPB plus iPod Touch. I'm wondering how big, dimensionally, the MBP 13" box is. Not the laptop itself, but the box it's packaged in. In other words, this thing: I'm just trying to figure out if it will fit in my bags, or if I'll have to take a backpack or something else. Thanks very much for your time.