RD-04 is a car that is part of the Racing Drones.
It never made an on-screen appearance but was released as a Die-Cast collectible car.
-2005 Acceleracers Racing Drones
-2006 Team Colors Series
-2006 Ultimate Track 3 Pack
-2006 Holiday Hot Rods Series
-2008 Hybrid Racers 5 Pack
-2008 Hot Wheels Turbo Driver
-2011 Thrill Racers Ice
-2011 Hot Wheels Mystery Models Circuit Champions Series
- Because this car is driven by RD-L1, it is speculated that it can turn into the Slam Ram Hyperpod.