Electric versus gas mode
OnStar, which is a subsidiary of GM, has 5.6 million subscribers who give GM access to data driving trends. By mining the data on when people drive and how long their trips are, GM created a profile of how much they expect drivers would operate in electric only mode if they had a Volt. The Volt drives 40 miles on batteries and then an internal combustion engine burns fuel to sustain the batteries.
The light green portion shows how often drivers polled would only be running on electric mode. The blue is the amount of time the gasoline engine would kick in and the dark green is the amount of time that a daily charge would extend electric driving time. Analyzing this data shows that 90 percent of drivers can do 90 percent of trips on electric mode, said Nick Pudar, the vice president for planning and business development for OnStar. However, GM polled a set of customers with a profile executives think are good candidates for the Volt, Pudar said.
October 19, 2009 8:23 PM PDT
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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