For 260 km of Autobahn driving, 130 kph results in 2 hours for that distance. Even a mere 160 kph (~100 mph) saves 22.5 minutes rather than the 10 minutes you're suggesting.
It's rare that you actually are able to go that fast for prolonged periods of time. For one, lots of stretches of the Autobahn have a speed limit. Secondly, there's also other traffic, traffic jams, construction sites, ...