Down and Derby (released as Racing Ace outside of North America) is a 2005 American comedy film written and directed by Eric Hendershot and starring Greg Germann, Lauren Holly, Adam Hicks, and Pat Morita.

As each man becomes more and more obsessed with building the fastest car, their wives eventually become so annoyed that they leave the house, taking their sons with them.

Kim tells Phil that their son Brady (Adam Hicks) has built his own car while staying with his grandfather, with advice from grandpa's neighbor, and she challenges him to "do the right thing".

Ace is shocked, but makes a gesture of congratulating the Davises; still, the minute he leaves the room, he throws a temper tantrum.

The review aggregator website Rotten Tomatoes surveyed 27 critics and assessed 6 as positive and 21 as negative for a 22 percent rating.