Just wanted to share this: We found the perfect length 90º right-angle cable for CarPlay with our iPhones. It's just long enough that it reaches the bottom of the phone without stretching or without having too much excess, allowing you to lay the phone down. Apple MFi certified, 6" cable. When it's plugged in, it tucks itself nicely away.
Monoprice 6" 90º Lightning cable
Monoprice 6" 90º Lightning cable