Find out about other 'green cars' in the carmaker's pipeline
This is one fuel-efficient gasoline hybrid car
A stock Kia Optima Hybrid has set a Guinness World Record for using just 5.5 tanks of gasoline in a 14-day, 12,712-kilometer road trip while driving through all 48 adjoining states of the United States in a gasoline
Hypermiling across the USA
While we're preparing for a long weekend ahead of us, two American motorists are getting ready to set a Guinness World Record for the lowest fuel consumption in a gasoline hybrid car while driving through all 48 adjoining states of the
