Cardiologist and the Honda Mechanic

A Honda mechanic was removing a cylinder head from the motor of a Honda when he spotted a well-known cardiologist in his shop. The cardiologist was there waiting for the service manager to come and take a look at his car when the mechanic shouted across the garage,"Hey Doc, want to take a look at this?" The cardiologist, a bit surprised walked over to where the mechanic was working on the Honda .The mechanic straightened up, wiped his hands on a rag and asked,"So Doc, look at this engine. I opened its heart, took the valves out, repaired or replaced anything damaged, and then put everything back in, and when I finished, it worked just like new.So how is it that I make $24,000 a