Talking about young, my city was "Incorporated" in 1885! And that was mostly tents, I'm sure. It was just a place to cross the Rogue River.
And as far as travel, One year my whole family drove to eastern Texas and back, via Southern California, to visit family. (4,000 miles) The next summer my sister, her boyfriend and I drove to Oaklahoma and back in one week total, right after I graduated from High School. (2,400 miles in 6 days.), and the summer after that, just my sister and I drove to Missouri and back, to visit relatives (3,600 miles.) The "Road Trip" is a rite of passage. That's 10,000 miles in a year and a half - most of which was done without anybody in the car over 21.
It's nothing to go visit my in-laws that live 300 miles away. We do it all the time. (See why we whine about gas prices?)
One other thing I've noticed as a cultural difference is the "Do-It-Yourself" (Or "DIY") mentality. A "Plumber" here (S. Oregon) is someone who installs plumbing in a new building, not someone you call when you have a leaky faucet -- you're expected to fix that yourself. Part of our standard education (culturally, not necessarily Public school) includes basic carpentry, welding, motor vehicle repair (basic mainenance stuff, like oil changes, filters, spark plugs, etc.), plumbing, and stuff like that. You only hire someone to do that for you when you get some "disposable income."
Also the degree of "politeness" varies considerably from area to area. We think New Englanders (Yankees, to us) are very rude -- they think we're way too polite. But even our type of "Politeness" is still different from people I've known from England.
It's also true that our history is related to what affects America. Even "World History" only focuses on the world before we became a nation. So, in a sense, it's all "American History." We'll study England, and France, and Rome, and Greece, and Egypt and all that, until 1776, then it's all about us. (Or should I say U.S?) We only study other cultures in the sense of how they affected us. Either they have been allies, or enemies. (The exception to this being Israel, mostly because of deeply embeded religious culture, I suppose.)