fuel economy

A local news station advertised a segment that aired this evening devoted to what would and would not save fuel (and money) for a motorist. See www.fox2ktvi.com for a list of questions they posed to random people at the gas pump as well as to a man from AAA who had answers based on research. I was disappointed that the website doesn't answer the questions. I saw the segment, but--for example--I don't remember hearing anything about fuel injectors, or additives. Here's what I did hear: 1) Driving faster than 55 mph uses more gasoline. 2)Using cruise-control will save gasoline. 3)Aggressive drivers will use about 37% more gasoline 4) Idling for long periods with the AC on will "send a lot of dollars out the tail pipe." Maybe I checked the website too soon. Maybe they wanted to encourage people to get the answers from the broadcast; now that it's come and gone, perhaps they'll update the website with answers. Here's hoping!