As i was driving my cars transmision stoped working and the tow truck driver said that the transaxle was broken

What is your question?

There was no loud sound and the engine runs fine but when you place it into park the emergency brake must be used to keep it from rolling. Whats wrong and what needs to be repaired?

What makes this problem better or worse?

No prior warning

How long has your 1996 Toyota Camry had this problem?

Same day