- Study measured seven different drivers during their normal weekly driving, doing over 2,000km between them
- Even in the case of long distance commuters the cars were in zero emissions mode (ZEV) for over 50% of the time and for over 30% of the distance covered
- For city centre commuting over 75% of the time and over 50% of the distance was in ZEV mode
- The three drivers with the longest commutes had the best fuel economy, averaging almost 60 mpg.