depreciation
Used Prius prices higher than new model's

If vehicles could be sainted, stained-glass artists all over the U.S. would be busy figuring out the best colors for the Toyota Prius to shine in. Brand new examples of the motorized mollusk that everyone can't wait to buy spend just five days on dealer lots. Last year's model lasts just fifteen days more.
The real coup, however, is in the prices. An unused Prius requires about $26,672 to take home. The used version, with fewer than 10,000 miles, goes for around $27,945. That's right, nearly $1,300 more. More incredible: a 2007 model with more than 22,000 miles will only save you $276 compared to the price of a shiny new 2008. We're not sure you can even call that depreciation.
read more »NADA: Luxury segment has the worst depreciation
Spend more for the cutting edge of luxury and style, and you could wind up taking a larger whack than most when it's time to trade in that sled. The National Automobile Dealers Association (NADA) is reporting that premium luxury vehicles actually have the highest annual depreciation rate. The reason for the stone-dropping value is that luxury car buyers tend to want the latest and greatest.