8. Shelby GR-1
In the early 2000s, Ford’s design department was on a retro-futuristic trip with many successful concepts that drew inspiration from the ‘40s, ‘50s, and ‘60s. However, the most appealing was the 2005 GR-1, a modern-day recreation of a classic sports coupe similar to the legendary Shelby Daytona Coupe.
With its bullet-shaped body consisting of polished aluminum and a 6.4-liter V10 engine in front, the GR-1 was a functional concept with fantastic performance. However, Ford never had plans for production, so the Shelby GR-1 remained a study.