"I think being the first to do anything is cool," Legge said.
"Being one of the very few who gets to attempt to race at Indy and at Charlotte and then do both on the same day, like looking back in 10, 20 years, like yeah."
She described herself as "an English girl who has assimilated into the United States of America. A race-car driver, an adventure junkie, a foodie."
Legge has completed an Ironman triathlon, skydived, and conquered Pikes Peak. "I try and do things that scare me or that make me feel alive," she said.
Only five drivers have attempted the double since 1994, with Tony Stewart remaining the sole competitor to successfully finish all 1,100 miles.
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"It's a once-in-a-lifetime opportunity to do either the Indy 500 or the Coca-Cola 600 but to be able to do both on the same day is pretty special," Legge said.
