To be specific, it's a model of a first year Mustang coupe, known as a 1964 1/2 model. From LEGOLAND Florida Resort where it's on permanent display:
Made out of 194,900 LEGO and DUPLO® bricks, the giant model (named #BrickPony) took approximately 1,200 hours to assemble by a team of veteran Master Builders at LEGO Systems, Inc., in Enfield, Conn.
#BrickPony measures more than 15 feet long, nearly 6 feet wide and more than 4 feet tall. It weighs 1,712 pounds, of which 960 pounds are LEGO bricks and 752 pounds is its aluminum chassis.
A few surprises were added under its hood, including a virtual horn and the sounds of a real Mustang engine — a first for a life-size LEGO vehicle — plus working headlights and taillights.