Complex sentence: The couple was given a choice of two prizes to play for: $5,000, or $5,000 and a car (early episodes gave the choice of just the cash or the car).
Split into simpler sentences: The couple was given a choice of two prizes to play for. One was $5,000 cash, while the other was an automobile in addition to the cash prize (early episodes gave the choice of just the cash or the car).