Yee Haw, Morgan! Way to go. I'd definitely buy a copy of your book. Your stories are always awesome. Heck, just the characters you come across while knitting on the road are great. I'm sure there's loads of stories in there. "Knitting Guy on the Road - Tales from a man with needles who's not afraid to use them".
Someone else mentioned that you should have some extra yarn and needles with you in case people want to try to knit, and that you should take all the swatches and make a blanket out of them. Imagine the stories you could get from each person. If the book was a hit (which, why wouldn't it be) you could auction off that blanket and give the proceeds to your favorite charity. Just an idea.
Keep us posted!