Just because a vehicle didn't come straight from the dealer ready to connect to Bluetooth doesn't need to deter you from upgrading. There are stereos on the market that can have you hooked up and ready to go in no time. These devices help sync everything together and provide you with a smoother ride.
Take JVC's El Kameleon KD-AVX40, for example. Touch-screen controls -- which are activated when your hand draws near -- allow you to make calls and listen to music in a variety of formats. Volume is automatically lowered while a call is being placed and resumes to its initial volume when the call is complete.
You can also view videos on the stereo's display screen. But since it's not such a hot idea to watch anything but the road while you're driving, videos will show only when the car is stopped and the parking brake is applied. To settle down any backseat drivers you might have along for the ride, the stereo comes with the hookups for alternative screens to be installed elsewhere in the car and works with a wide variety of media formats that can be played at any time during the drive.