
DAYTONA BEACH, Fla. -- Even though driving a Daytona Prototype won't help him much in the Daytona 500, Jimmie Johnson was happy to be in a race car -- any race car.
Johnson was behind the wheel of the No. 99 Gainsco Pontiac Riley when a clutch problem forced the car to the pits for repairs in the early stages of the Rolex 24 Hours Grand-Am race at Daytona International Speedway.

David Donohue chased down Juan Montoya just 41 minutes from the finish of the Rolex 24, then held the former IndyCar and Formula One driver off by the race's closest margin.
After finishing his first shift in the car Saturday night, Johnson said he was grateful for the opportunity to drive, even though replacing the car's shifting fork had cost the team eight laps to the leaders. More than anything, in the absence of NASCAR testing this season, it gave the three-time defending Sprint Cup champion a chance to engage his brain before the 51st running of the Daytona 500 on Feb. 15.
"It's nice," Johnson said after turning the car over to teammate Jimmy Vasser. "It really is nice just to get the racing butterflies going, get out on the track, hear the national anthem. I got goose bumps listening to the national anthem [Saturday]. That was neat.
"It's nice to get your brain going again. Just like this series [Grand-Am], we come down and have our biggest race at the beginning of the year, so this year, mentally, I think it's more important to run this race than it's ever been."
Johnson has been fighting a respiratory infection since returning from a vacation to Tahiti during the offseason.
"I can't get rid of it," Johnson said. "I've been through two rounds of antibiotics. I had a five-day Z-Pak [Zithromax], and then another five-day one that I'm just at the end of. It's like the last bit in my head I can't get rid of."
Despite mechanical problems, Johnson teamed with Vasser, Alex Gurney and Jon Fogarty to finish seventh. (Continued)