Few have ever been able to mastermind both the aesthetics and the engineering aspects of a design. I suppose Horacio Pagani comes closer than other contemporaries but I feel like he tips towards the art-object side of things, especially with interiors.
Discussion
I think Gordon is in the same league as the old Italian Carozzeria the likes of Bertone, Zagato.. Pininfarina. Pagani is his own and yes, definitely art pieces.