Three teams of two kids each (all siblings) sat in race cars and competed in a game where they find out how much they know about each other while trying to win prizes. Correct answers were always followed by overhead clapping, which became a trademark of the show.
Unknown Episode 
Kevin Frank: Matthew, How many people will Adam say wear pajamas in your family?
Matthew: 2 people because sometimes my mom wears them but not always.
Kevin Frank: When she's not wearing pajamas, what is she wearing?
Kevin Frank: I just wanted to clear that up for everyone watching and for your mom.
- Kevin Frank - Host