Two-tome W Series champion Jamie Chadwick isn’t giving up on her ambition of racing in Formula 1 within five years. Chadwick is on the verge of her third consecutive title in the W Series all-female championship, an achievement the 24-year-old Williams development driver could reach next week in Singapore. But despite her winning credentials, Chadwick’s motorsport career appears stuck in neutral, mostly through a lack of funding. However, the young female racer may finally take another step up the ladder next season thanks to Andretti Autosport who offered Chadwick a test in Indy Lights this week at Sebring. “I think…