DAYTONA BEACH, Fla. -- International Speedway Corp. has formally petitioned NASCAR to have a second Sprint Cup race at Kansas Speedway beginning next year, a spokesman said.

Since NASCAR won't add races to a schedule that features 38 total races (36 points races and two non-points events), a second Kansas date likely will have to come from another track owned by ISC.

An ISC spokesman said Thursday company officials would not have any comment on where they plan to move a date from to give Kansas a second date -- pending NASCAR's approval.

Should NASCAR grant the move -- and it is expected to happen -- the question becomes where to put it in the schedule and what other tracks might need to change their race dates next year.

ISC tracks with two Cup dates are Auto Club Speedway in Fontana, Calif., Daytona International Speedway, Talladega Superspeedway, Martinsville Speedway, Richmond International Raceway, Phoenix International Raceway and Michigan International Speedway.

Cars wrecking

Kyle Busch and Denny Hamlin were among drivers who had to go to backup cars after incidents during Thursday's two practice sessions at Daytona.

Busch had to go to backup after an incident with David Ragan and Kasey Kahne in the first practice session. Ragan and Kahne also went to backups.

Hamlin had to go to backup after he was tapped by Busch and collected Tony Stewart, Reed Sorenson and Robert Richardson Jr., forcing Hamlin, Stewart, Sorenson and Richardson to backup cars.

"Kyle just misjudged it by a hair and it causes a wreck,'' Hamlin said. "I've done it before and most everyone in this garage has done it before.''

More testing

Goodyear had a tire test earlier this week at Bristol Motor Speedway and has more testing planned later this year elsewhere.

Greg Stucker, director of Goodyear race tire sales, said that the tire test was held after seeing signs of stress on the right front tire by teams during the spring race at Bristol.

Stucker said they're looking at using a tire similar to that used at bigger tracks because of the high speeds and banking in the corners at Bristol.

Stucker also said Goodyear has a tire test scheduled Aug. 24-25 at Talladega Superspeedway. That's to prepare for Daytona International Speedway. Daytona will be repaved after Saturday night's race but the work is not expected to be done until the end of the year.

The compound in the asphalt to be used at Daytona is to be similar to Talladega, so by testing at Talladega, Goodyear can have a tire ready for a January test session at Daytona.

Near deal

Michael Waltrip Racing has an agreement in principal with David Reutimann on a multi-year contract.

However, no deal has yet been signed.