I'm with continuum on this. A smaller ssd plus a decently fast data drive is the way to go. I currently have all my steam files on their own HD (well, I used to... now their on their own partition on the same drive as the media files since the steam drive died.), and it works out great.
Anyone seen/heard/used cloudfoundry before? Its a PaaS from vmware that is also open source, and is a pretty good product for being less than a month old. I have it running on two vps's at the moment serving up quite a few domains. And it does a decent job as well, no hassle for me to push my rails or node project up to the cloud, including parody projects (have a 76LOC proxy that does a regex on another site before returning it. Twas fun to write). When they get php support integrated I'm planning on moving all my vps's to it, since it will make my life oh so much easier.
I do really like fords SYNC stuff, but their recent reboot issues make me a little wary. If there is a computer in my car, it should not crash at all, and if it DOES, it should either come back up immediately OR load into a failsafe system.