If your really into open wheel female racers, look at Katherine Legge in the Toyota Atlantic series. She pulled off a awesome win at Long beach. That girl drove the freakin wheels off that machine. She currently second in the series. Screw oval racing. Road racing takes more skill IMO.
The girl is bad ass. Here is some of her history. I love a woman that can drive like that.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>
Quote »</TD></TR><TR><TD CLASS="quote">• Finished 10th in 2004 North American Formula Renault series, despite running only partial season schedule
• Competed in British Formula 3 Championship in 2003
• Won the pole position at Oulton Park in 2002 British Formula Renault Championship
• Captured the 2002 British Women Racing Drivers Club Susan JP Jamieson award for fastest lap speed, earning the title Fastest Female Racer in the UK
• Became first woman to win a pole position in British Formula Ford Zetec series in 2000</TD></TR></TABLE>