The Aukey Portable Bluetooth Receiver comes with more features than many similar products and a clever means of remotely controlling playback from your phone, but it will involve running wires to a power outlet and an auxiliary input in a car.
A big focus of Google's I/O developer conference will reportedly be a system for integrating navigation, audio, and calls from an Android phone with a car dashboard.
The GoGroove BlueGate is a good option if you want to add Bluetooth audio streaming to a car or home audio system, but portable-headphone users will want to look for a more flexible unit.
The Grooveshark Bluetooth Car Kit isn't the best hands-free calling option and its app integration needs finessing, but the hardware is an easy way to bring Internet radio and smartphone audio playback to almost any car.
The Sony MEX-GS600BT's App Remote function is not very useful without a dashboard mount for your phone, but everything else about this full-featured car stereo makes it easily recommendable.
Supertooth launched the HD Voice Bluetooth speaker phone for cars at CES 2013, noting that it has two speakers and two microphones for superior call quality.
Alpine and Jeep team up to build a car audio system that's as tough as the Wrangler that it's installed in.
Recognizing the many noise sources in a modern car, Harman International introduces a system that can isolate sound from seat to seat.
Building on its InControl app integration system, Jaguar Land Rover launches a new voice command hub for its 2015 models.
Brian Cooley runs down the top five contenders in-car audio entertainment. And you might be surprised at what's at the top.