I was running a local autocross a few years back, and struck up a conversation with a guy running a "500", he made a comment that certain models of the 500 were banned from competing because of a high COG. They do look high, but not sure what the real problem was, if any. His car looked fairly crisp on the circuit.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.