Yes, your new car should come with a short adaptor cable that converts the car's proprietary socket to a standard USB socket. However, as many previous posts on this forum have covered, some second-hand cars don't (they've been lost / stolen or whatever). Normally, it's to be found in the upper glove box. If you can't find it, make sure you insist on the seller providing one. It's part of the car's equipment, you can't use the car's USB socket without it, and they're quite expensive to buy unless you're lucky enough to find a cheap one on eBay.