Button, 43, is driving the No. 15 Rick Ware Racing Ford Mustang with support from Stewart-Haas Racing.<br>In the only 50-minute practice session this weekend, he ran 13 total laps and went 28th quickest out of 39 entries. He was 1.770s off pace-setter Tyler Reddick, but ahead of fellow F1 World Champion Kimi Raikkonen by about half a second.<br>His steep learning curve began even before exiting ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/jenson-button-nascar-learning-curve-cota-debut/10448138/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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