article thumbnail

Distance driven per person is still down from its maximum in 2004

Green Car Congress

from 1984 to 2004 (from 6,612 miles to 9,314 miles). from 2004 to 2013 (from 9,314 miles to 8,472 miles). In conclusion: Distance driven per person reached its maximum in 2004. The main findings concerning distance driven per person (summarized in the table below) are as follows: An increase of 40.9% A decrease of 9.0%

2004 322
article thumbnail

Distance driven in the United States: Did we reach the peak in 2004?

Green Car Congress

from 1984 to 2004 (from 6,612 miles to 9,314 miles), then decreased by 9.1% from 1984 to 2004 (from 18,256 miles to 24,349 miles), then decreased by 10.2% In conclusion: Distance driven per person and per household have both reached their maxima in 2004. by 2013 (to 8,468 miles), and then increased by 4.3% per household).

2004 317
article thumbnail

Study finds rates of LDV fuel consumption in US peaked in 2004; indications of peak motorization

Green Car Congress

These rates are down 16% to 17% from their peaks in 2004, except that the rate per vehicle is down 13% (from its peak in 2003). This rate increased to a maximum of 474 gallons in 2004. The rate increased to a maximum of 698 gallons in 2004. The rate increased to a maximum of 1,240 gallons in 2004. 2003 to 2004. -13%

2004 252
article thumbnail

Satellite study: livestock digestion released 70% more methane than oil and gas industry in 2004

Green Car Congress

Livestock were the single largest source of methane gas emissions in the United States in 2004, releasing 70% more into the atmosphere than the oil and gas industry as estimated by other inventories, according to a new study by a team from Harvard University, JPL/CalTech and UC Irvine. The EPA estimates that 8.8 megatonnes (9.7

2004 231
article thumbnail

Arizona State University Professor’s Work to Stabilize the Grid Pays Off

Cars That Think

He is a professor of power systems engineering in the Fulton program at Arizona State University , in Tempe. Vijay Vittal Employer Arizona State University, in Tempe Title Regents professor of electrical, computer, and energy engineering Member grade Life Fellow Alma mater B.M.S. in EE at Iowa State University , in Ames.

Arizona 93
article thumbnail

Mie University team working on aqueous li-air batteries; 300 Wh/kg

Green Car Congress

Researchers at Mie University in Japan have developed a new protected lithium electrode for aqueous lithium/air rechargeable batteries. In 2004, a research team developed a composite lithium anode with a three-layered structure to overcome this problem.

Universal 236
article thumbnail

Actual fuel economy of cars and light trucks: 1966-2019

Green Car Congress

No change between 1991 and 2004 (19.6 A modest increase between 2004 and 2008 (from 19.6 Michael Sivak is the managing director of Sivak Applied Research and the former director of Sustainable Worldwide Transportation at the University of Michigan. A modest increase between 1973 and 1991 (from 12.9 mpg for both years).