Tracy Kiser is the on-highway communications manager for Cummins, a global power leader that designs, manufactures, sells and services diesel engines, power generation systems and related products and technologies (www.cummins.com). 

Along with engine related fuel economy influencers, the driver can have up to a 30 percent impact on fuel economy, so factors like engine performance and driveability are also important considerations.
What is the future of engine displacement?
June 12, 2013