Real talk: Be an english teacher.
Most countries only require you to have a college degree of any sort (Japan, Korea, Thailand, Middle East, Africa, etc, etc) and while you won't be raking in the cash (Japan averages about 3-4k a month at entry level, korea 4, and Middle East 5.5-6) you can still live there and immerse yourself in the actual community as opposed to just being a passerby that's only there for a week or so. It's a LOT more fun to do immersion, it's the exact reason why I changed my major, and you'll learn a heck of a lot more and have much more memorable experiences.
Also, you won't be able to travel extremely far only by car, and the costs will actually add up pretty quickly.
OR, if you don't want to travel around teaching english, then just teach english in Japan or Korea. Every 6 months you have to leave for 2 weeks (they have weird visa rules) and just use your monies to fly to various places for that time while you're teaching.
I'm doing something similar, so if this is -actually- something you're serious about and want to talk about, drop me a PM or something :3.