Here’s something that will wake you up: a lot of people are sleepy while driving. A new study from AAA shows more than a quarter of all motorists reported being so tired in the last month that they had a hard time keeping their eyes open behind the wheel. Tammy Gobert of AAA says young drivers are the most guilty. The oldest drivers, those 75 and above, are the least likely to drive while drowsy. AAA says 17% of all fatal crashes involve somebody falling asleep at the wheel.