They let you ride in the back of the rig with your own mom? Amazing...

-Yes, docs do the worst CPR. When was the last time you saw a doc chest-thumping? As for not training med students, that's insane!
-"Vomiting" I've never really seen during CPR. A bit of regurgitation, but nothing more than a quick finger sweep fixed.
-Rib fractures. So what? He's dead... Also, ramming down on the abdomen is bound to cause injuries (the GI tract is a hollow organ, after all).
-PM-Pete, I've got you beat (EMS since '96): 2 CPR-only saves: my younger brother (2 years old, drowning), and a guy that coded as we transferred him to the gurney (my quick thump brought him back and gave him a hell of a bruise). Interestingly, precordial thump is no longer taught in current ACLS.

Lastly, as much as this is an important topic, let's not forget that even 30% is an amazing number. The statistic includes everything from the motorcycle rider hit by a semi, the 95 y/o vegetative coma patient in the nursing home, and the 20 year old college football player. Given the huge number of reasons that the heart stops, is it any reason that it won't start up again? It's not like we can just switch out the spark plugs: when an organ fails, it stays broke (hence the demand for transplants). Medicine isn't at the point yet where it can fix an organ that has no functionality.