Whether you bought a new car yesterday or you’re riding along in a decades-old junker, your vehicle of choice may not have all the modern capabilities you desire. A few key upgrades can fix that, providing you with everything from a killer Bluetooth audio system to a smoother, more enjoyable ride.

Dear Lifehacker,
I'd like to integrate my smartphone into my car, but it's a pretty basic vehicle that's a far cry from technologically advanced. What can I do without paying a fortune to make my car and smartphone work well together?