Originally Posted by John Deere Boy
It is theroetically possible that your parking pawl is failing to release. Next time you go driving in it, you might try leaving the car in neutral and applying the parking brake just to see if it still fails to "catch" the next day. (I'm not a tranny expert so don't put much weight on my advice)
You win the golden prize John Deer Boy !
I ended up having the car towed to the local tranny shop and they found that the parking linkage located inside the housing cover was broken. The car would go into gear but the parking linkage was not releasing. The new seals that they installed also fixed a leak that used to spew fluid onto my driveway as I pulled out after the car had been sitting overnight.
All is well now and it didn't end up needing an expensive rebuild as several other tranny shops that I phoned said it would need.
Thanks for all the suggestions.