Here's a Peek Under the Plastic of Natural Light's Record-Breaking Water Slide

How do you combine beer with wet people sliding down a mountain? Very carefully.

If all goes according to plan today, a bit of history (both the sporting and the marketing kind) will be made on a grassy slope in Davis, West Virginia. Preparation has been going on for weeks—a mix of public relations, event planning and no small amount of physical engineering. After all, when a company sets out to build the world’s longest plastic water slide, there’s no room for screwups.