Yates teammates feel the Force.

Robert Yates Racing teammates Elliott Sadler and Dale Jarrett may be each other's biggest supporters away from the track but on Saturday at the Phoenix International Raceway the two drivers will be on opposing sides of one of the biggest rivalries in cinematic history.

With the final instalment of George Lucas' epic 'Star Wars' series set to his the cinema screens this summer, Sadler and Jarrett will have a different look about their cars during this weekend's Subway 500.

Thanks to Sadler's sponsors M&M's, the two RYR partners will be united under the Star Wars Chocolate M-Pire (nice) banner at Phoenix with Jarrett representing the White (Chocolate) Jedi and Sadler representing the 'Dark Side.'

"I was really excited to hear I was driving for the dark side," said Sadler, who will be officially sponsored by M&M's new dark chocolate range. "I grew up watching the first three Star Wars movies and I thought that Darth Vader and the storm troopers were very cool.

"It is just another reason why I feel so lucky to drive for M&M'S. Not only do we get to be a part of the final movie release of such an epic saga, but we're also enlightening all of the loyal NASCAR and Star Wars fans about Dark Chocolate M&M'S."

"It's great that not only the #38 team and the #88 team work together on the track but that our sponsors, UPS and M&M'S, have a strong partnership as well," he continued. "Our sponsors celebrate all of our successes at RYR, whether it is the #38 team or #88 team, the same ways our teams celebrate together. So when one partner is involved in an opportunity as great as this Star Wars promotion, we want to have everyone in on the fun with a chance to benefit from the excitement."