From USA Today:
Kyle Busch did something in Friday night's Camping World Truck Series race that won't be soon forgotten.
And for it, he's been parked for the weekend at Texas Motor Speedway— including Sunday's Sprint Cup race, NASCAR President Mike Helton announced.
Under a caution brought out on lap 14 of the Winstar World Casino 350K at Texas Motor Speedway, Busch drove into the rear of Ron Hornaday's truck, spinning the championship contender into the wall and ending the night for both drivers.
You can read the rest of the article here: Kyle Busch suspended for Cup race for actions in Truck race