Healthy Driving

Of late, I've been doing a lot of driving for work. To the tune of about 2,000 miles in the last 2 or 3 weeks. Plus 3 overnight stays in medium-to-small towns. This is all well and good, but it ends up with me eating most of my meals from fast food restaurants and gas station convenience stores. If I have enough time in a town, I could look for a restaurant that might have healthier options, but I rarely want to take the time.

So, what's a healthier way to eat on the road? Are there tasty AND good-for-me things on the menus at fast food places? Are there easily-transportable things that I could pick up at a grocery store before I depart?

I'm open to suggestions! What healthy things do you eat when you travel?