He is Gerry Judah. He used a steel monocoque shell to send three 911s eighty two feet into the air.
His newest sculpture stands in front of the Porsche museum in Stuttgart, Germany.
The three cars are a 1970 911, the new 911 II, and the 1981 G model.
Judah started his career building backdrops for theaters after graduating from University College, London.
He's done similar work for Ferrari, Alfa Romeo, Mercedes-Benz, and a number of others.
See his work on his website: http://www.judah.co.uk/