I saw by chance an episode of Mythbusters on the Discovery Channel over the weekend. The myth they were attempting to bust was about how difficult or otherwise it might be to escape from a car submerged in water. I felt that the programme was very well made, highlighting the very serious difficulties in escaping from a car in water in an accessible way to young people.
http://mythbustersresults.com/episode72 – Interesting comments
Episode on Youtube