Of course, I have seen them at truck stops/gas stations when I was on the road driving to two trade shows and a city since I had an appointment there. I am from Syracuse and went down to Hershey and Louisville for RV trade shows. I noticed at stops they do have Christian books. Even saw t-shirts at the stops. Well, this one right by my house, there are a group of t-shirts focused on God and Jesus Christ. Almost everything are there. Even Bibles! I checked long before this statement above. I was curious as I was on the road. Also I highly recommend you get this book that is designed for long distance travelers such as vacationers, truckers, and RVers (I am a new RV manufacturer). It is called Road Exit. Google it. They list EVERYTHING at EVERY exits and rest stops on ALL major highways such as I-90, 81, 95, 75, 80, etc.. Even by passes such as 481, 471, etc. They list not just gas stations, but restaurants, stores, malls, and truck stops that are also designed for RVs because of its size can be big as a Motor Coach Bus. Much higher canopy, supplies, needs, etc. Including Christian needs.
God bless!
I'm not making fun of you, I think that's actually cool. Maybe you can preach to other truckers on your CB radio (if they still use those) while you're cruising along the highway. You can have them get on your frequency and preach to a bunch of them at once too. I'm sure they'd love hearing a female preacher. You'd be a great blessing to them. 
