I'm planning on setting aside some time to drive on the Autobahn between Berlin and Hannover on an one way rental, and while I usually use Hertz in the states, I'd like to know what's the best option for renting in Berlin. I must drive an automatic since learning to use a manual to drive on the Autobahn without some practice before seems unsafe, but I'm not wedded to a specific make, size, or fuel choice either.