You can check arrivals at Grimsby using MarineTraffic.com
https://www.marinetraffic.com/en/ais/index/eta/all/port:148/portname:GRIMSBY/page:1 is the current list of Grimsby arrivals. You can use this site to check the Emden departures.
You can also play with
www.vesselfinder.com to track the various car carriers quoted in other posts on the forum eg , Emden, African Highway, Ems Highway, City of Barcelona and so on. and discover their destinations.
There is no way of knowing what cars they are carrying, but I find it informative to see just where some of them go,and it is a way of passing the time waiting for the new car.