iPhone 5 in car

Has there been any in-car charger alongside a radio tuner device, released for iphone 5's yet?

Yep:

Scosche strikes market with new Lightning chargers | Electronista

that doesn't do radio as well?

Could be, but I doubt it.

Would think that the manufacturers figured out the last go round that the vast majority of people (I would think greater than 99% of those that can afford an iPhone) already have a radio in their car, so no point making a car charger with a radio.

He's no referring to an actual radio, Tom, at least I don't think he is -- he's probably referring to a transmitter that wirelessly lets you "broadcast" your iPhone to your car stereo on a less-used frequency.

If I've interpreted him correctly, then the answer is yes -- Scosche makes that sort of device, and if they don't have one with a lightning charger right now they will have one very soon, I assure you.

It should be noted that FM transmitters of that sort -- well, they sound terrible when they work at all. In most US cities, radio bandwidth is clogged and there won't be many if any "open" frequencies that don't have horrible "drift" from careless stations. If you are going to buy one of these devices, at least get one that can try multiple frequencies to find the best candidate -- a lot of the cheap ones use a locked frequency at the bottom of the dial (87.7 FM for example) and in a LOT of cities there are actual FM or TV stations using that frequency!

Ah, yes... forgot about those - had bluetooth too long.

Could get one of the existing models and the Lightning to 30 pin adapter everyone is using with their older iPod speaker docks.

Forget the FM modulator, they're more hassle than they're worth, even under ideal conditions. What you really want is an integration system like this:

World First iPhone 5 Compatible Car Integration Kit - Dension

...or this...

USA SPEC: Products

And here's a very reasonably-priced head unit that will handle basically anything you throw at it: you could hook a phonograph to a preamp and connect it to your car with this get-up (I have a feeling that wouldn't be a good idea for the needle or record, however!).

Scosche shipping multi-input ControlFreq car audio receiver | Electronista