-In Germany every beer drinker gets his personal beer coaster, which is used to keep a tally of the number of beers drunk. On these “Don’t drink and drive” coasters, the tally was pre-printed, the mark for the fourth beer forming a cross.-Each guest gets the “Don’t drink and drive” double-vision stamp on his hand as he leaves.

- As hitchhikers, grim reapers were stationed in the parking areas.

- Billboards around discotheques.

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