Fuel Economy Tradeoffs Graphic (image) University of Washington Share Print E-Mail Caption From 1975 to 1990, most of the benefit from fuel saving technologies went towards making cars more fuel efficient. From 1990 to 2009, a greater share of those potential savings were cancelled out by changes that made cars faster, bigger or more luxurious. Credit University of Washington Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.