“It is very hard to open a door under water.”
I found the text recap of an old “Mythbusters” episode.
“...the water pressure exerted against a sinking auto makes it extremely difficult to open a door and swim to safety.”
“...the water pressure differential between the inside and outside of the cabin was simply too great for Adam to pry open the driver’s side door.”
(How did Teddy get out?)
“But once the sinking sedan had filled to the brim, the pressure difference stabilized, allowing the door latch to release.”
http://www.discovery.com/tv-shows/mythbusters/mythbusters-database/open-the-door-of-a-sinking-car/
More mystery.
Did Teddy’s car ever “fill to the brim”? I thought there was that air pocket. That air bubble wasn’t replaced by water, but by CO2.