please mind the full closure of the highway A7 just befor the Worlds:
Friday, 03.07.2015 (from 22.00 hrs.) – Monday, 03.07.2015 (until 05.00 hrs.)
for the highway junction “Hamburg-Nordwest” to junction “Schnelsen”.
www.via-solutions-nord.de will show you the best way to circumvent the full closure.