Steep driveway and a very nice view of the valley. No traffic and good leg training, even when it's hot, because a lot of shade falls through the many trees. The downhill ride is of course great if you do not want to Warmbronn.
In the upper part you have to crouch neatly to get under the tree. Then brakes on and with top speed through the hollow path. Unfortunately, the last meters have to be fun-free on asphalt. Still worth it.