Car Syncing Problems with Photon

Hey guys I have some serious Photon Network problems...

I need some help with syncing cars across the network. Im working on a TPS Shooter in which people can drive any car, and im having issues as to who needs to own that car (server vs client). Can any of you guys pass along some good networking advice or give me some ideas as to how i can solve this problem?? I cant come up with anything. Also if you guys have any advice for syncing the location and rotation of car / tires / players in car i would appreciate that too, not too sure as to how wheel wheelcolliders will sync across the network

Thanks in advance!