CO2: Scooter vs SUV

The worst scooter tested (from 1968) spewed out 4,900 parts per million of hydrocarbons and 8.6 percent CO2 emissions.
A more modern scooter (2006 model) had 168 ppm of hydrocarbons and 3.1 percent CO2.
The SUV 10 ppm and 1 percent CO2.
http://www.autobloggreen.com/2006/08/14/little-scooters-pollute-more-than-suvs-suvs-cleaner-than-scoote/