Texas highways have speed limits of up to 137kph (85mph), with most a little lower at 120kph (75mph). Autobahn "recommended" speed is 130kph (80mph).
While the Autobahn unrestricted areas have no speed limit, Texas drivers essentially always drive at least 10% over the speed limit and often reach speeds of 145kph (90mph) to 160kph (100mph).
That said, some rural highways are slower at like 88-105kph (55 - 65mph), but people still go much faster than that and only slow down if they think there are police or if they're approaching a small town on the highway where there will definitely be police to enforce the speed limit.
We also manage to get into like 10000x more wreckes than happen on the Autobahn, so that does sometimes slow things down.
I am curious how true this. All the Europeans on tiktok discussing America (it's a new trend) say we all drive faster than they are used to, and how our speed limits seem to be suggestions to us.