I am familiar with a LOT of hybrid owners. I have not met a single owner whose car isn't still on the road, except those who had their cars totaled in accidents.
The Toyota Prius will last hundreds of thousands of miles without replacing anything of value.
The Battery is warranted for 100,000 miles. Only ignorant people would suggest that the expected lifetime of a product is equal to it's warranty -- if that were the case, there'd be a lot of cars on the side of the road with 60,001 miles on them.
They also have the figures wrong on the amount of energy used to create the Prius, and the amount of pollution involved in initial construction of the battery packs.
Pluse, the batteries are nickel-metal hydride batteries, and are entirely recyclable.
Hate them if you like, but it's silly to make up stuff about them just to make yourself feel better (not the poster, the writer).
Most blogs say that hybrid batts go for 200+.
My honda is doing great at 74+.