1mb/day by YE05?  That's pretty mild.  If all we did was change our driving style, we could easily save 10%, or 2MB/day, and that's without even taking other steps to minimize the number of miles driven.

There is a LOT of "low hanging fruit" in US oil consumption that could yield some pretty impressive savings with no need for a single person to modify their current vehicle or buy a different one.

(There was an article on Green Car Congress recently about a guy who drove across Australia and improved his MPG by 30% with only driving technique.  He got, I believe, 68MPG from a diesel sedan--no hybrid, no car mods, no special fuel.  With less attention to detail than he showed, I'm sure we could all get 10%.)

Obviously a 10% savings on gasoline would be about 1.3mb/day for the US, not  2mb/day.  

(Note to self: Posting with a killer sinus headache is not a good idea.)

Lou, as someone with migraines now and again, <Clinton voice>I feel your pain.</Clinton voice>