Shamelessly stolen from CleanMPG news.
Basically 15 San Francisco hybrid Escapes have been forced into retirement at 300k miles. They've saved drivers an average $9000/year and are still going strong, but law requires that cabs be retired from service at 300k miles no matter what condition they're in.

Bob Wilson (user bwilson4web) put together a fantastic analysis of what the January 2009 Hybrid sales report can tell us about who hybrid customers are and what drives them to purchase a hybrid automobile.