Kid, you do realize that developers can't do something in only 1 hour, especially a one WHERE THE CAR GOES BACK IN TIME?
the first thing im gonna do is put a car in a specific spot then move it, use my time machine and go back in time just to phase them in together lol
Basic Troubleshooting includes disabling all other mods and clearing cache. Do it if you want your issue fixed, otherwise you won't be able to know where the issue originates from.