Look what's under the tree . . . Three red-hot NASCAR romances That are sure to get your pulse racing! Ladies, Start Your Engines . . . by Kimberly Raye All Savannah Calloway wants for Christmas is a chance to prove her talents with an engine -- and hot young NASCAR driver Mackenzie Briggs is ready to play Santa. But they soon find that winning the race isn't nearly as important as winning each other's hearts . . . 'Tis the Silly Season . . . by Roxanne St. Claire NASCAR Busch Series racer Clay Slater needs a ready-made family -- fast -- to impress a potential sponsor. Lisa Mahoney can't resist the chance to give her kids the storybook Christmas she's never been able to . . . and if that includes a kiss under the mistletoe, so much the better! Unbreakable . . . by Debra Webb Although she's been hired to prove that drivers are serious athletes, Dr. Maxine Gray doesn't think much of NASCAR racing. So in the spirit of Christmas, driver Rush Buchanan is determined to show the good doctor the "rush" that racing -- and race car drivers -- can bring.