Actually a whole lot of people worked on the "Ecoboost" Ford GT (SUPERCAR)". Some history:

I did the FIRST design work on the prototype 3.5L Ecoboost engine (with a designer named Sherry Lopes) many years ago.
The 'Mule' test vehicle was a F-150 truck).

Eventually the 3.5L Ecoboost engine was actually installed in a F-150 production truck. We offer the Ecoboost engine in a lot of other vehicles today. To date Ford has sold over 3 million Ecoboost vehicles.

The 1.0L ECOBOOST engine was named the "International Engine of the Year" three times. http://www.autoblog.com/2014/06/26/ford-1-liter-international-engine-year-threepeat/

My job at Ford Research in North America, (Senior Engineer for Ecoboost projects), is to do initial work on all Ecoboost engine design programs.

I worked on the previous Ford GT too, during the design stage. It was a V-8 engine.

The new one is a lot faster and has a lot more HP. So I did not work on the CAR. I worked on the Ecoboost engine design.

Tom V.