The Insight is considered a 'Halo' car, that is a car that would otherwise have been cancelled due to extremely low popularity. I would imagine Honda likes to be able to top the FE charts with it, so it remains an option until they bring out another small car with an updated hybrid system. Hopefully that will be the Fit.
It's not history yet, but had a great run as EPA milage champ 1999-2005. That's in part because it's a great hypermiler, but also in part that until this year, the automotive world was not interested in competing. I'm sure what follows will be better.
"Built to order", not that I've heard of. I think many Honda dealers do pretend the car doesn't exist which sort of makes sense since there are so few of them being sold. I read somewhere recently that less than 550 have been sold this year so far (for entire US).
Actually I had another local Honda dealer email me yesterday that he just got a 2006 CVT on the lot. He knows I bought a 2005 in July from another local dealer (he didn't have one in July when I was looking, but he expected his to be delivered at end August). I told him if I bought another one, it'd be a manual as I prefer manuals and they get better mileage. I saw a new (never sold) 2004 for sale in New Jersey - blue, manual that I'm semi-considering. It's relatively cheap to ship to CA and the 2004 qualifies for the carpool lane stickers (for one driver cars) whereas the 2005 does not.