My dad's old stereo receiver from the 70s. It was easy to connect an MP3 player invented decades later. By contrast, my 5-year-old car has a useless built-in G

My dad's old stereo receiver from the 70s. It was easy to connect an MP3 player invented decades later. By contrast, my 5-year-old car has a useless built-in GPS that can't be replaced.