1999 Ford Thunderbird prototype is equipped with a Lincoln 4.6-liter V-8 engine paired with a 5-speed automatic transmission Only three were made, one of which was public. The Thunderbird prototype was first shown at the 1999 Detroit Auto Show on January 3, 1999. These press kits were given out in Detroit as well- https://www.youtube.com/watch?v=-gDeEI-Bm3E&
This car appeared at Pebble Beach in August and next at the International Auto Show in Frankfurt, Germany, in September 1999. It was a big hit and Ford approved the design. The car was introduced in the 2002 model year. This concept is unique and is built on a Lincoln LS platform with a front-mounted Lincoln V-8 and rear-drive. It has a 1-inch-longer wheelbase than production models, and a steeply raked windshield gives it a more aggressive style.
Images courtesy of Barrett-Jackson Auction Company