Alcohol is also very dangerous when you're driving. It gives you confidence at a time you could do with a little less confidence. As your motions slow down also your reactions slow down. You can't calculate distances to other points right anymore. And it narrows your view. It's like you're looking into a tunnel. You also get more blinded by lights easely. Already after two pints of beer the risk of creating an accident is twice as high as normal.
