I opted to save a tree; I've been carting my GCRs back and forth for 4 years now, and have yet to ever open one while at the track. I realize some people (i.e. tech inspectors, stewards, etc) will need copies for their jobs, but for the rest of us it seems such a waste. And I have no doubt that if you really, really need one, you will be able to get your hands on one (or as Greg noted, a laptop with the e-version) in no time. Besides, this will give me one more reason to need a laptop