I think Hyundai is one of thee most blatant copy catters on U.S. shores. But in reality, all the auto makers copy off each other in some way or another.
2 quick examples that come to mind...
-Ford "stole" the Aston Martin grille and made it the new face of Ford
-circa '99 Ford F-150 and Toyota Tundra interiors....the Ford was first
Ford
Toyota
Damn....never noticed this one....