Emily Kraus and her boyfriend were driving to the concert Saturday, when they found Matthews stranded on the side of the road. He didn't have a cellphone, and his bicycle had broken down. They helped Matthews put his bicycle on their bike rack, and he got in their car for the rest of the ride.
"We didn't know how to make conversation with him, in fact, so we were talking about his tour and where he had come from," Kraus said. "He had just been in Cincinnati and he said, 'I'm taking a short break after this one because I have to drop my daughters off at camp.' ... He was just a very humble guy."
Matthews was so grateful that he invited Kraus and her boyfriend to dinner. They later went backstage and enjoyed the show from the front row. Matthews also signed their tickets saying, "Thanks for the ride."
"I rolled over and I said, 'OK, yeah that really happened yesterday,'" she said with a laugh. "It was surreal. We couldn't believe it."
CNN and the Associated Press contributed to this report.
