> Don't all highways in Germany have minimum speed of 70 km/h? No. The only legal limit is that the vehicle has to be type-licensed for going more than 60 km/h

> Don't all highways in Germany have minimum speed of 70 km/h? No. The only legal limit is that the vehicle has to be type-licensed for going more than 60 km/h, which an S-class clearly is. Actual minimum speed requirements are rare. Nevertheless this is for now clearly primarily useful as an assistant for being stuck in bad traffic, and you can get ticketed for going slow enough to hinder traffic flow without a good reason, and if you can argue a good reason depends. An upgrade to 80 so you can stick it behind a truck in the right lane would make it a lot more practical.