Moving with beer (bottled)

Next year, fate willing, I'll be packing up my crap and moving back to the Chicago (IL) area.

This translates to packing my household crap into a uhaul (or using one of those PODS services) and me, the cats, the dog, and my beer into my car for the long drive.

Are there any rules/laws that I need to worry about with regard to having a couple cases of beer in my trunk, across state lines or is it one of those "don't ask, don't tell" things (don't drive like an idiot and you wont get pulled over and get asked stupid questions, etc.)

Just curious.

As long as they aren't open containers and aren't within reach of the driver I don't see how it could be a problem.