4. Lancia Delta S4 Stradale
The Lancia Delta S4 Stradale was created as a road-going version of the formidable Group B rally car, produced solely to satisfy homologation rules. It featured a twin-charged engine and cutting-edge rally technology, yet was fitted with minimal comforts to qualify as a street car. This blend of extreme engineering and limited practicality made the Stradale a true loophole legend. Dive deeper at Lancia and Top Gear.