Before slip road to the motorway was built, good chances were there, but now only for exit city and theres better way to do this (try to get in Sulkov or by train to Dobřany zastávka and then gas station)
I arrived by train here around 11pm, parking were full of trucks, all of them, except one, sleeping in trucks. In 10 min. I got offer to Nuernberg and Polish driver took me into Regensburg where I was heading to.