Short answer is no. It will be just a charger and you would need to have your music on an MP3 player to take advantage of any auxiliary input that you car radio may have. There are radios available with usb inputs that would enable you to use your memory stick if you want to change the one that is currently in your car. Just Google 'car radio with usb'.
Sony Xperia Z5 review: Hands-on with the phone which the Z3+ should have been