At least 13 NASCAR Nextel Cup Series regulars are scheduled to participate in the Busch Series edition of NASCAR Preseason Thunder Las Vegas. NASCAR stars Matt Kenseth, Greg Biffle, Kasey Kahne, Kevin Harvick and Las Vegas' Kyle Busch as well as former Champ Car champion Paul Tracy are among the full-time NASCAR Nextel Cup stars that will be part of the 32 drivers who are scheduled to test Feb. 6-8 to prepare for the March 11 Sam’s Town 300. "I really enjoy running the Busch car," Biffle said. "I have a lot of fun with it, and the more seat time I can get, the better. I hate it when there is a race going on and I'm not out there in it." The Busch Series is limited to five tests throughout the 2006 season, which adds to the importance of the Las Vegas test. Tickets remain for the March 10-12, 2006 NASCAR Weekend by calling the ticket office at 1-800-644-4444 or logging on to Here is a list of the drivers scheduled to test: Monday and Tuesday, Feb. 6-7: Greg Biffle, Clint Bowyer, Jeff Burton, Kyle Busch, Stacy Compton, Carl Edwards, David Green, Mark Green, Kevin Harvick, Ron Hornaday, Kasey Kahne, Matt Kenseth, Todd Kluever, Burney Lamar, Ashton Lewis Jr., Matt McCall, Jamie McMurray, Paul Menard, Danny O'Quinn, Johnny Sauter, Ken Schrader, Regan Smith, Reed Sorenson, Jon Wood and J.J. Yeley. Tuesday and Wednesday, Feb. 7-8: John Andretti, David Gilliland, Denny Hamlin, Steve Park, Kenny Wallace and Chris Wimmer. Wednesday, Feb. 8: Steve Wallace.