The best Bluetooth car adapters ensure you can enjoy hands-free ... That's all it takes to wirelessly sync up your phone with your car's stereo system, letting you enjoy your favorite audiobooks ...

The Apple CarPlay and Android Auto Wireless Adapter — on sale for $99.99 — lets you connect your phone to your car wirelessly.

Thus, he set about building himself a simple Bluetooth to 8-track adapter. The hack is straightforward, with [Jim] grabbing a Bluetooth-to-cassette adapter off the shelf. These simply take in ...