Pioneer AVH-4100NEX

The long wait for the first aftermarket head units that run Android Auto and Apple's CarPlay is finally over. Pioneer is shipping its entry-level AVH-4100NEX unit for around $700.

Update 8 a.m. EDT March 16: Google got back with us about Android Auto not actually being available yet. The short, short version was "hang tight,"which we were already doing. And it's not like this head unit is inoperable without Android Auto. This is a head unit with Android Auto, not an "Android Auto head unit."

That gets you a 7-inch touchscreen that's compatible with Android 5.x devices — currently on a whopping 3 percent of all active devices — as well as with the iPhone 5, 5s and 5c, and of course the iPhone 6 and 6 Plus. And you don't have to choose one or the other, it's just a matter of plugging in your phone. The best of both world, really. Once you do that, your phone's actually controlling the UI, but you're interacting entirely with the head unit's display.

The 4100NEX has a resistive display, which sounds downright ancient but still is pretty common when it comes to car infotainment. The 4100 also the most affordable of Pioneer's trio (the 7100 and 8100 are $1,200 and $1,400, respectively).

We took a look at what's what back at CES.

We're also awaiting aftermarket Android Auto products from Panasonic and Kenwood.