plug-in

So, this is a general question for everyone. I'm curious how long the battery in a plug in car will last? Batteries are good for only so many charges and going from 0-100% is the worst thing to do for a Lion battery. So is a plug-in a useful product? I would imagine that they are used 0-100%...

Hi Everyone, I'm interested to know more about the drivetrain of the Volvo S90. It would be great if someone can share image of the drivetrain. I googled it but couldn't find for S90, instead i found for XC90. Thanks in advance !

Does Ford sell any of its plug-in hybrid versions of Fusion in any other markets, apart from the US? PS : I've read that the Ford is planning to produce the Mondeo Plug-in (Fusion in US) in China by Changan Ford joint venture early this year.