Seven women gunned the engines of their high-performance Italian race cars on the top of Nob Hill on Friday — an “I am woman, hear me roar” salute — before taking off for Santa Barbara in a history-making, first all-female Ferrari rally in the U.S. Clad in jumpsuits, sunglasses and metallic shoes to lend feminine flair to their $1.4 million LaFerraris and $260,000 458 Spiders, the group had plans to shop, dine at winemaker dinners and take a helicopter tour once at Bacara Resort & Spa. […] the real purpose of the trip, which cost participants $5,000 each through donations or sponsorships, was to raise money for the Prancing Ponies Foundation, a nonprofit benefiting underprivileged high school girls. The high-performance cars outside the hotel drew dozens off gawkers who snapped photos and took videos to capture the earsplitting sounds of the engines. “We are creating women leaders one girl at a time by raising funds to send them abroad to help them develop their self-esteem and self-confidence so that someday they are leaders and can own and race their own Ferraris,” said Chanterria McGilbra, a North Bay pharmaceutical executive who created the foundation and organized the rally. McGilbra bought her first Ferrari last year with stock options from work and credited her experience abroad — earning a master’s degree in business from the International University of Monaco in 2007 — with improving her self-confidence. About 2,640 Ferraris — six models ranging from $198,000 to $485,000, not including the limited edition LaFerrari — were sold in North America last year, according to Krista Florin, a corporate spokeswoman, but few of the owners are women. Other participants included Agne Christensen, an artist and creator of the Seek Fine Art app; Colleen Costello, a mother of two teens; Hayley Melidonis, a manager at Intel Corp.; and an interior designer and contractor specializing in tech real estate who identified herself only as Susan D.