From: suzyw0ng@outlook.com   
      
   I only found one paper where they measured this. It was a 1971 car   
   versus a 2003 car, and the modern car had 12% the CO of the old car. But   
   that old car would presumably have been quite primitive (carburetor,   
   fixed valve timing et cetera) and the newer car would have spewed out   
   less CO without the cat anyway.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)