It's time for family vacation again. It's almost never a good idea to bring paraphernalia across state lines unless it's an emergency. Your trip may take you through the states with the worst marijuana laws. Never fear, because there is always a way to engineer a hot nail or pipe when you're on the go and on the down low.

Last year, Randal S. Olson created a scientifically optimal road trip map using an algorithm that spans across the continental 48 states. The trip stops at each of the 48 states, visiting the most important National Parks, historic sites, and National Monuments. It should be a crime to not appreciate the wonder and beauty of America without the enhancement of ganja.

Chances are, you'll be medicating in stealth mode  whether it's to conceal it from Grandma or conceal it from the kids  so here are five way to medicate on the road.