June 25, 2014

Three-Time Nascar Series Champion To Drive The No. 14 Rush Truck Centers SS At

Company celebrates with 14% discount at dealerships across the country and exclusive new line of Tony Stewart Signature Series truck accessories and racing merchandise.

SAN ANTONIO, Texas, June 25, 2014 — Rush Enterprises, Inc. (NASDAQ: RUSHA & RUSHB), which operates the largest network of commercial vehicle dealerships in North America, today announced that as part of its Rush Truck Centers partnership with Stewart-Haas Racing (SHR), three-time NASCAR Sprint Cup Series Champion Tony Stewart will drive the No.14 Rush Truck Centers Chevrolet SS this weekend in the NASCAR Sprint Cup Series race at Kentucky Raceway in Sparta, Kentucky. To commemorate the No. 14 sponsorship, all 106 Rush Truck Centers locations will offer a 14% discount up to $150 on parts, service labor and racing merchandise today through Monday, June 30, 2014 and will feature an exclusive new line of Tony Stewart Signature Series custom truck accessories for heavy- and medium-duty trucks.

"Rush Truck Centers is extremely proud of our continued relationship with Tony Stewart and Stewart-Haas Racing," said Rusty Rush, chairman, chief executive officer and president of Rush Enterprises, Inc. "Many of our customers are passionate race fans, so we're proud to be associated with a great racing organization like SHR and a great sport like the NASCAR Sprint Cup Series. The 14% discount on sponsored race weekends not only helps us promote our partnership, but, more importantly, gives us a fun way to say, 'Thank you,' to our customers."

"The Tony Stewart Signature Series truck accessory kit, designed in collaboration with Stewart-Haas Racing and Tony himself was launched this year in response to customer demand for merchandise that supports the Company's sponsorship of Tony Stewart and the No. 14 team, said Karen Konecny, vice president of marketing for Rush Enterprises.

The kit includes mud flaps, exterior decals, a travel mug, key chain and dash plate and custom floor mats that fit the Peterbilt Model 579 and the International ProStar. All accessories can be purchased separately or as a kit and will be sold through select Rush Truck Centers locations nationwide and online at RushTruckCentersRacing.com/gear.

"We have also launched a dedicated microsite, RushTruckCentersRacing.com, which serves as an online hub for Tony Stewart fans to follow Rush Truck Centers' sponsored Sprint Cup Series races, learn more about the Tony Stewart Signature Series truck accessory kit, and obtain the latest information on promotions and discounts," Konecny added.

To generate excitement among the social media community, Rush Truck Centers will leverage its Facebook page, Facebook.com/Rush-Truck-Centers to promote sponsored races, fan-exclusive discounts, giveaways and updates. Customers can also join the conversation on Twitter by following @RushTruckCenter and using the #RushTruckCenters hashtag.

The Kentucky race will be the third of five races featuring Rush Truck Centers on the hood of Stewart's racecar. The No. 14 Rush Truck Centers/ Chevrolet made its 2014 debut earlier this year in Fontana, California in March and also ran in Richmond, Virginia in April. The Rush Truck Centers/Mobil 1 racecar will also be featured at Watkins Glen International on August 10 and on October 5.

The NASCAR Sprint Cup Series race at Kentucky begins at 7:30 p.m. EDT on Saturday, June 28, 2014 and will be broadcast live on TNT, PRN radio and Sirius XM channel 90. Tony Stewart's in-car audio can be found on Sirius channel 113 and XM channel 226.

As part of the sponsorship, Rush Truck Centers provides Stewart-Haas Racing trucks for all of its race teams.

About Rush Enterprises, Inc. Rush Enterprises is the premier service provider to the commercial vehicle industry and owns and operates the largest network of commercial vehicle dealerships in the United States, representing truck and bus manufacturers, including Peterbilt, International, Hino, Isuzu, Ford, IC Bus and Blue Bird. The Company's vehicle centers are strategically located in high traffic areas on or near major highways throughout the United States. These one-stop centers offer an integrated approach to meeting customer needs - from sales of new and used vehicles to aftermarket parts, service and body shop operations plus a wide array of financial services, including financing, insurance, leasing and rental. Rush Enterprises' operations also provide vehicle up-fitting, chrome accessories and tires. For more information, please visit www.rushenterprises.com.

About Stewart-Haas Racing Stewart-Haas Racing is the title-winning NASCAR Sprint Cup Series team co-owned by three-time Sprint Cup champion Tony Stewart and , founder of Haas Automation - the largest CNC machine tool builder in the western world. The team fields four entries in the elite Sprint Cup Series - the No. 14 /Mobil 1 Chevrolet for Stewart, the No. 10 GoDaddy Chevrolet for , the No. 4 Budweiser/Jimmy John's Chevrolet for and the No. 41 Haas Automation Chevrolet for . Based in Kannapolis, N.C., Stewart-Haas Racing operates out of a 140,000-square-foot facility with approximately 270 employees. For more information, please visit us on the Web at www.StewartHaasRacing.com, on Facebook at www.Facebook.com/StewartHaasRacing, and on Twitter @StewartHaasRcng.

CONTACT: Rush Enterprises, Inc., San Antonio Karen S. Konecny, 830-626-5102 [email protected]