The movie was co-written by crime novelist Donald E. Westlake, who had written the similarly titled novel "Hot Rock", which had been filmed about seven years earlier, and under the same name [See: The Hot Rock (1972)].
Ernie, you want a doughnut?
Ernie: I'd rather have the money instead!
When the 78 or 79 Trans am explodes, it is replaced with a early model Camaro 70 to 73 for the destroyed car.
On original 1.66:1 film negatives intended for exhibition at movie theaters in a 1.85:1 aspect ratio, the "far view" version of the 1976 Columbia Pictures "Sunburst" logo in 1.85:1 (cropped to 1.66:1 to open movies by Columbia in 1.66:1 released during the 1976-1981 era) is used. On home media and TV, the Academy ratio version is used instead.