Puking in someone else's car is a surefire way to get punched in the face. If that's what you're going for, then good luck. If you suffer from car sickness and don't want to get punched in this face, this video from Head Squeeze may be just what you need to understand the problem and work to fix it.
Greg Foot explains the difference between static and dynamic equilibrium in terms that our simple brains can understand and uses animations to illustrate his points. The video is fun and to the point and should be very helpful for a lot of people. If you're one of those drunk pukers, this isn't for you...you deserve to be punched.