Joyroom lightening cable is good for charging iphone 13 pro max in the car?

You're very welcome! I suggest that you just get yourself an Apple charging cable. If you want to use a third-party cable, be sure that it is MFi-certified.

Ref: Mfi Licensed Accessories - Apple

Joyroom is not an Apple product. As such, no one here can attest, whether or not, it would be "good" for charging your iPhone 13 in your car.