No, you haven't missed a joint announcement from Apple and Griffin. However, you might have missed this post
on Make which links to ZapWizard's Flickr set detailing how he put a Mac mini,
with accompanying LCD screen and mouse/keyboard, into his car.
I know, there have been tons of stories like this, but this is the first one that includes a little product cross mating. Since he didn't have enough money to get a new car stereo the Wiz decided that he would just integrate an iTrip directly into the Mac mini.