It’s not often you have a racecar as dominant as Christopher Bell’s No. 20 Toyota was during Sunday’s Enjoy Illinois 300 at World Wide Technology Raceway. As Kyle Petty said Monday, Bell was “the class of the field,” and there’s certainly no argument against that. Bell led a race-high 80-of-240 laps and won Stages 1 and 2. “We saw Christopher Bell be the class of the field,” Petty said. “Who says there’s no such thing as momentum? Coming off of Charlotte, he rolls into St. Louis — same speed. He’s got it, he’s running up front, he’s leading laps, he’s getting it done. But at the end of the rac…