Even more from the full story behind the awesome Group B Rally cars, featuring mind-blowing contemporary and archive racing footage of these fire-breathing rocket ships at blistering speeds! Declared “too fast to race” at the end of the 1986 season, the Group B cars changed the face of rallying! The Lancia Delta S4 could accelerate from 0-100km/h in 2-3 seconds on a gravel road, and Nigel Mansell is reputed to... see more