Speedpick
Predict the outcome of each CART race.
http://www.speedpick.com/

CJ's Speed & Thunder
Imagine a way to make your racing experience more exciting. Pick your favorite drivers in your favorite racing series.
http://jacobsusa.com/

ACS Fantasy Racing
The Fantasy Racing League for Adams County Speedway.
http://www.geocities.com/acsfantasyracing/

Fantasy Drag Racing
Offers monetary prizes based on results from NHRA races.
http://www.gofantasydragracing.com

Racing Predictions
A place to predict the results of various motor racing series and win cool prizes
http://www.racingpredictions.com/

Fantasy Racing Central
Directory of over 100 fantasy racing competitions covering Formula 1, CART, NASCAR, F3000, Bikes and Touring cars.
http://www.fantasyracingcentral.co.uk/