Don't forget, you have 2 search functions to use - the box on each page is a Google search of the site. The "Advanced" link goes to the forum software search tool. Both have their advantages, depending on what you're after (e.g. the Google one will let you search for exact phrases, but the forum one doesn't. But you can search only for text posted by specific members with the forum one, and not with Google.)
Here's one of the EPA "losses' diagrams:
Fuel Economy: Where the Energy Goes
I didn't post the image about cost of driving - must have been someone else.