One of my friends and former bandmates is a DJ/ad guy at a local radio station, and has been for years. To show the effects of alcohol on driving, they staged a radio show wherein drivers had to complete an obstacle course early in the day. Then, having drinks throughout the day, they had to periodically retest on the obstacle course. Two of my other bandmates were in the cast of drinking drivers. As the day went on, they actually drove better after multiple drinks and knocked over less cones. I didn't know about it until I talked to them the next day, but the station and highway patrolman monitoring the event actually had to lie on the air so as not to encourage people to drink and drive. The actual results of the day were never known by the public.