The California Energy Commission (CEC) periodically conducts a survey of household and commercial vehicle fleet owners 
to evaluate consumer preferences for near-term vehicle transactions and the type of vehicles they plan to purchase.
These vehicle preferences are used to estimate parameters of vehicle ownership, transaction and choice utility 
equations.They are also input to vehicle demand forecasting models that are used to forecast 
transportation energy demand in California. In the 2013 survey, respondents were taken from the pool of participants
in the 2012 California Household Travel Survey (CHTS).