A stunningly rural idea wherein
underage people that want to get together and consume
booze do so parked on the side of the road (usually at night) somewhere out in the middle of nowhere. Also called a field party or road popping.
Good spots must have a clear line of vision in all accessible directions to allow for early detection of cops and a quick exit. Don't fall for the trap of concealment. The cops check those hidden spots, and then you're boxed in and busted.