You want an industry standard - go check out MirrorLink. Doesn't care what OS, just works. Hard to find news on this since anytime Apple/Google say "we're doing something" the media just drools... MirrorLink works with Android phones already and probably Windows phone soon. Only reason Apple not playing is they think it's easy to do on their own. Now they're realizing this is a multi-layered engineering problem that also involves the regulators (DoT, EU, Japan, China, etc....) Google going to run into the same problems. If these guys would just get with the program and work with the industry standard it would already be realized instead of just now coming out.

VNC is a great start, but those that build cars won't just do screen replication from a phone on the dash. The UI on a phone isn't meant for use while driving. Simplified UI needed. MirrorLink is industry standard and uses VNC as a foundation for launching specific apps