I guess this technically qualifies as a car cake but it's really about the guy protruding from the engine compartment. The car/cake is just a prop, an accessory to the figure of the man, not the other way around.
The cake was created for a 75th birthday celebration. A custom birthday cake should evoke memories and encourage the telling of stories. Otherwise the conversation might stray to that worst of all birthday questions, "How does it feel to be 75?" which usually establishes the low water mark of any birthday celebration.
Did I succeed in my objective? I hope so. One gratifying comment was, “The thing that is missing is the bored kid standing next to the car holding the 3/16” socket wrench. I owe my understanding of fractions to that car.”
So, yeah, I think I’m good with it.