I had a MD state trooper tell me at 2am last Wednesday that it was illegal for my child to be in the sleeper. I told him that was NOT true at all! I work as a team and my co-driver was sleeping. You have to have one if your kid is under a certain age, usually 5 but depends on the company. He tried to lecture me about being a good mother and I ALMOST lost it right there. My son is VERY well cared for, safe and loved. He ran my license then comes back and tells me to have a good one. No ticket, so I guess he knew he was wrong.