Busch remained competitive and was running in the top five at the midpoint of the race. But his night ended in frustration when his engine blew up on lap 253.
"I commend NASCAR for taking the initiative and letting us repair our damaged cars from the issue we had," Busch said.
Busch said he never saw the nylon rope.
"I just heard a big thunk on the right-front side tire and thought the right-front tire blew out," Busch said. "That's how hard it felt... It did have an effect slowing my car down and I could feel it like, 'Whoa, that's weird.' I don't know that anybody has ever seen that. Maybe now we can get rid of that thing."
It was more bad luck for Busch, who has never won a Sprint Cup race at Charlotte Motor Speedway and suffered his share of bad luck.
Kasey Kahne, who wound up finishing second behind Kevin Harvick, said he thought his eyes were playing tricks on him when he saw something strange on the track.
"I have never seen anything like it," Kahne said. "I came off turn four and I saw it wrapped around Kyle's car and it hit mine and I thought I had to be seeing things because there's no way there could be a cable on the race track. By the time we got to turn one I saw it again and saw Kyle's fender and saw his car go down a little. That's when I knew I wasn't seeing things."
NASCAR said the camera system in question is from CamCat.
The CamCat camera system is the product of an Austrian company that does work with many outfits around the world, including the Olympics, NBC and others. The company has been handling sporting events since 2000 and hasn't had any prior known incidents with its cameras.
In May of 2000, more than 100 fans were injured outside of the CMS when an 80-foot section of the walkway fell an estimated 25 feet onto a highway below. Fans were crossing the bridge to a parking lot following the completion of the NASCAR All-Star race.