Here's a breakdown of this weekend's action in the world of motorsports. (All times ET)

Winston Cup

FAST FACTS
Event	NAPA Auto Parts 500
Site	Fontana, Calif.
Schedule	Friday, qualifying, 5 p.m. (FX, 8 p.m., tape); Sunday, race (Fox, 2:30 p.m.)
Track	California Speedway (d-shaped oval, 2 miles, 14 degrees banking)
Distance	500 miles, 250 laps

Last race: Bobby Hamilton was able to shoot out of a massive pack two laps from the end to win a caution-free Talladega 500. Hamilton chased down Tony Stewart two laps from the end of the 188-lap event.

	Drivers to Watch
	Check out a short list of drivers to keep an eye on this weekend at California.

Last year: Jeremy Mayfield won, switching ignition boxes when he momentarily lost power near the end.

Fast facts: Jeff Gordon set the race record of 155.012 mph at the inaugural event in 1997. ... Gordon has won two of the four races in Fontana. ... Dale Jarrett leads Gordon by 145 points in the standings.

Next race: Pontiac Excitement 400, May 5, Richmond, Va.

Busch

FAST FACTS
Event	Auto Club 300
Site	Fontana, Calif.
Schedule	Friday, qualifying, 6:30 p.m.; Saturday, race (FOX, 3:30 p.m.)
Track	California Speedway (d-shaped oval, 2 miles, 14 degrees banking)
Distance	300 miles, 150 laps

Last race: Mike McLaughlin won for the first time in three years and 75 races, taking the Subway 300. McLaughlin, whose last victory came in Concord, N.C., in October 1998, took the lead on lap 104 and led to the end of the 113-lap event at Talladega Superspeedway.

Last year: Mark Martin crossed the finish line 1.111 seconds ahead of Jeff Burton for the victory.

Fast facts: Greg Biffle, in his rookie season, leads Kevin Harvick by three points in the standings. ... Biffle won the Craftsman Trucks series title last year.

Next race: Hardee's 250, May 4, Richmond, Va.

IRL

FAST FACTS
Event	Atlanta Classic 500
Site	Hampton, Ga.
Schedule	Friday, qualifying, 8 p.m. (ESPN2, Saturday, 4 a.m., tape); Saturday, race (ESPN2, 7 p.m.).
Track	Atlanta Motor Speedway (quad-oval, 1.54 miles, 24 degrees banking)
Distance	308 miles, 200 laps

Last event: Sam Hornish won the inaugural Infiniti Grand Prix at Homestead-Miami Speedway, giving Panther Racing its third consecutive IRL triumph. Hornish, 21, held off a late push from 20-year-old Sarah Fisher for his second win in two races this year. Hornish also won the season opener last month at Phoenix International Raceway.

	Drivers to Watch
	Check out a short list of drivers to keep an eye on this weekend at Atlanta.

Last year: Greg Ray dominated, leading the second-greatest number of laps -- 182 of 208 -- for a winning IRL driver.

Fast facts: This is the first night race of the season. ... The race is the first two-day event in IRL history. All previous races in the series have taken place over a three-day period. ... Hornish is just the fourth driver in series history to win consecutive races.

Next event: Indianapolis 500, May 27, Indianapolis.

CART

FAST FACTS
Event	Firestone Firehawk 600
Site	Fort Worth, Texas.
Schedule	Saturday, qualifying (ESPN2, Sunday, 1 a.m., tape); Sunday, race (ESPN, 3 p.m.)
Track	Texas Motor Speedway (quad-oval, 1.5 miles, 24 degrees banking)
Distance	360 miles, 240 laps

Last race: Helio Castroneves fought off Cristiano da Matta in the Toyota Grand Prix of Long Beach. The two Brazilians put on a sensational show over the last half of the 82-lap race, with Castroneves holding off da Matta -- the runaway winner of the season opener last month in Mexico -- by 0.534 seconds.

	Drivers to Watch
	Check out a short list of drivers to keep an eye on this weekend at Texas.

Last year: Inaugural event.

Fast facts: This is the third race of the season and first on an oval. ... Da Matta leads the series standings by seven points over defending champion Gil de Ferran.

Next race: Lehigh Valley Grand Prix, May 6, Nazareth, Pa.

Formula One

FAST FACTS
Event	Spanish Grand Prix
Site	Barcelona, Spain
Schedule	Saturday, qualifying, (Speedvision 7 a.m.); Sunday, race (Speedvision, 8 a.m.)
Track	Circuit of Catalunya (road course, 2.937 miles)
Distance	187.968 miles, 64 laps

Last race: Ralf Schumacher ended a 3½-year drought for the Williams team, winning the San Marino Grand Prix. Schumacher, the younger brother of series champion Michael Schumacher, earned his first career victory.

	Drivers to Watch
	Check out a short list of drivers to keep an eye on this weekend at Barcelona.

Last year: Mika Hakkinen went to the front during a slow pit stop by polesitter Michael Schumacher, and led a McLaren sweep of the top two spots. It was the first victory of the season for the two-time Formula One champion.

Fast facts: Jaguar driver, Luciano Burti, will be driving for the Prost team for the rest of the season, starting with the Spanish Grand Prix. ... The cars will feature traction control at the track for the first time since the 1993 race.

Next race: Austrian Grand Prix, May 13, Spielberg.

NHRA

FAST FACTS
Event	Mac Tools Nationals
Site	Bristol, Tenn.
Schedule	Friday, qualifying, 4:45 p.m.; Saturday, qualifying, 12:45 a.m. (ESPN2, 9:30 p.m., tape); Sunday, eliminations, 11 a.m. (ESPN2, 5:30 p.m., tape.)
Track	Bristol Dragway

Last event: John Force raced to his 94th career NHRA Funny Car victory, beating Dean Skuza in the final of the rain-delayed Mac Tools Gatornationals in Gainesville, Fla. Larry Dixon, Jeg Coughlin, Matt Hines and Greg Stanfield won their divisions.

Last year: Inaugural event.

Fast facts: The facility has hosted the special Top Fuel-Funny Car eliminator event the last two years. ... Force has won twice this season.

Next race: Atlanta Classic 500, April 28, Hampton, Ga.

Craftsman Trucks
Last event: Scott Riggs passed up a tire-change stop to grab the lead with 108 laps to go and made the same rubber last for 151 laps in winning the Advance Auto Parts 250 at Martinsville Speedway.

Next race: Ram Tough 250, May 6, Madison, Ill.