The LEGO Drome Racers is a subtheme of LEGO Racers that ran from 2002 until it was discontinued in 2004. In addition the the LEGO set theme, a video came also called Drome Racers was released. The Drome Racers comprised of six teams, H.O.T., R.E.D., Nitro, Zero, Exo Force and Maverick. From LEGO's officla description: "146 km in diameter, with over 540 km of roads and seating for nearly 4 million spectators, the Drome is one of the largest man-made structures in the world and certainly the most amazing racing arena in human history."
2004 LEGO Sets
2004 was a shakeup year at LEGO, coming off of 2003 with record losses. Some significant events include the release of the QUATRO System for very young children, and most notably the replacement of many long-standing LEGO colors including gray, dark gray, brown and violet and the introduction of some new colors like light nougat which ultimately became the skin tone for many minifigures. In 2004, The LEGO Group created a partnership with Ferrari and a number of LEGO Ferrari sets were released that year based on Ferrari’s Formula 1 racing cars. New themes released in 2004 included Maersk, Knight's Kingdom II and Ferrari under the Racers theme. LEGO discontinued the Adventurers Orient Expedition, the original Spider-Man theme, LEGO World City and Gravity Games.