Ford Reveals Fiesta ST Concept at Frankfurt; Previews Future High-Performance Fiesta - Ford unveils exciting new Fiesta ST Concept at 2011 IAA Frankfurt Motor Show, indicating the future direction for a high-performance Fiesta - Fiesta ST Concept features a specially tuned 180PS 1.6-litre Ford EcoBoost engine to deliver spirited performance combined with fuel efficiency and low emissions - Bold and dynamic exterior styling inspired by Fiesta RS…