You can leave Hamburg to the south (A7-Hannover/Frankfurt/Munich) and southwest (A1-Bremen/Cologne/Netherlands) from the filling station known as "HH-Stillhorn" you can get there with the number 13 bus from suburbanstation S-Wilhelmsburg.
To Berlin you can start at the "Horner-Kreisel" and take the number 161 bus from S-Berliner Tor or walk from U3-Rauhes Haus.
You can find cars driving to most German cities for €10-20.
From the UK, it may be an idea to take a ferry to Denmark and then hitch down rather than going via Holland.
The Most Frequently Asked Travel Questions about Hamburg
Where To Stay & Best Hotels in Hamburg - updated Apr 2024
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Hamburg Travel Guide from Wikitravel. Many thanks to all Wikitravel contributors. Text is available under Creative Commons Attribution-ShareAlike 3.0, images are available under various licenses, see each image for details.