I'm replacing a 2002 Prius with a Nissan Leaf, and I'd like to replace the 2004 Prius with a plug-in. (Since I've gone to all the effort to get an electric charging station and second meter at home.) I like the additional space and features of the Prius v. How long do you think I'd have to wait for a plug-in version of it? 2012? 2013? Thanks.