Welcome, Caseman, to the best Jeep Wrangler Forum on the planet! Glad to have you on board. BTW, the Jeep wave is basically limited to those driving Jeep Wranglers (CJs, too). It's like a sign of the brotherhood/sisterhood of Jeep Wrangler owners. Just put a hand above the top of the steering wheel as you drive by. Unless the oncoming driver is "blind" (which I have been on occasion) or ignorant (no one;s told them), you'll get a response.