Complex sentence: Fisher made history by becoming the first female driver in the 21st century to drive a Formula One car when testing in 2002 at the Indianapolis Motor Speedway; a test arranged by her personal sponsor, TAG Heuer.
Split into simpler sentences: Fisher made history becoming the first female driver in the 21st century to drive a Formula One car. She participated in a demonstration run in 2002 at the Indianapolis Motor Speedway; a test arranged by her personal sponsor, TAG Heuer.