Delgadillo thought of a fun way to bring attention to his new restaurant . He cut the roof off of a 1936 Chevrolet , put paint , horns and emblems from other cars all over it and placed an artificial Christmas tree in the rear of the car . To bring attention to the restaurant , Delgadillo sliced the roof off of a 1936 Chevrolet hardtop , adorned the automobile with paint , horns and various automotive emblems and even an artificial Christmas tree in the rear of the car .