Just came off the road, was on the interstate for several hours and it being later in the evening I felt myself getting drowsy. Such a scary feeling so I pulled off and got a nap in. I got back on the road and was fine the rest of the way. Saw one car wreck which could have been drowsy driving and another car almost went off the road in front of me. So important to nap if need be, drownsy driving is one of the top causes of accidents.