Here are some interesting articles & testing information pertaining to car seat safety and The Nap Strap.
These are all potentially dangerous situations that can be avoided, and The Nap Strap provides a solution.
Virtual crash testing, conducted in the Netherlands, found that children sleeping slanted (in a slouched position) had increased injury, with higher neck loads during an accident, than those who were sitting upright
“Modifying car safety seats so that head flexion is unlikely could avoid the risk of apparently life threatening events.”
A study found that children accounted for 12% of all potentially distracting activities (in a car), with drivers in this study interacting with rear seat child passengers 12 x as often as they did with mobile phones.