They first appeared on the Alfa Romeo 33 ' Carabo ' concept car in 1968 , which was also designed by Gandini .
The doors , most often credited as a Lamborghini trademark , were a remarkable design feature for the Countach .
Lamborghini first appeared on the Alfa Romeo 33 ' Carabo ' concept car in 1968 , which was also designed by Gandini .
The doors , most often credited as a Lamborghini trademark , were a remarkable design feature for the Countach .