New Lexus Concept Car Has Headrest iPhone Docks

So they expect the iPhone, iPod Touch dimension specs not to change in the lifespan of the car?? From the pics, you couldn't just replace the headrests. Their molded in. Seems like a big risk. Cool, but I'd be pissed if I owned a Lexus and suddenly couldn't upgrade to the newest iPhone because it would no longer fit.

Seeeing this is still a concept, I think they just wanted to see how the idea would appeal to consumers. I'm sure they'd be wise enough not to put this exact system in production vehicles. A very smart design though.