I get that none of us realizes what is going to happen for sure. I agree with Nash's post however. I have seen identical estimates (180k to 200k miles) for battery life, and those with 90% of new capacity. Even if this is not true and the battery must be replaced at 100k the cost for a Gen II Prius would not be more than 2 times the expected cost which I believe will be in the $1000 to $1200 range with trade in, in say 2008. So deduct $2500 and you still come out $15k to the good. There is nothing bad about that.

Alden Bowles
2005 Toyota Prius II HSD