They don't want to look bad if they don't just run away from you. Better to think you can blow someone off the road than just barely beat them . I remember many years ago when I was at the Beech Bend Drag strip in Bowling Green Ky. . A track I went to often. A guy pulled up with a brand new SD 455 Firebird . He made a run that I didn't see . Think it was 14 sec flat. Claimed he couldn't get took off with street tires. And would run in the 12's if only he had slicks. His car was a beatufull Black and gold trim. And did sound strong with his headers open. Some how someone tried to get him to race my 71 455 Buick GS . And offered to put slicks on his car that where the right size for his car. He didn't want to race . But didn't want to look bad. We ended up running . He ran 13.90 and I ran 13.45 . He claimed he was still spinning . He wasn't . I beat him by 4 to 5 car lengths. I think he was a sleep on the light also.