Remember the good ol' days when RC cars were just about the coolest thing a kid could get for Christmas? Ahh, sweet memories. Drones and hoverboards may have eclipsed the RC vehicles of our youth, but it turns out there's a whole other world out there when it comes to RC planes. And I'm not talking about the cheaply built toys you get for $25 at Best Buy -- I mean, it's a very serious realm where grown ass adults spend their free time building and flying their own model aircrafts, sometimes with wingspans approaching 30ft. Unless it's a WWI or WWII replica, they're even powered by actual jets, with afterburners.