[Jonathan Madriaga (OP)]

What is it, and techniques associated with hypermiling?

[Karsten]

http://en.wikipedia.org/wiki/Hypermiling

Hypermiling is the act of driving using techniques that maximize fuel economy. Those who practice these techniques are referred to as "hypermilers."

[Huxlly]

simply I could not tell, you can more articles about Hypermiling from
http://www.infosysblogs.com/supply-chain/2009/01/hypermiling_your_supply_chain.html [nofollow]

[peppercorn]

http://ecomodder.com/forum/EM-hypermiling-driving-tips-ecodriving.php