I've never been to Texas, but 80 seems like a high speed limit. But I guess in rural areas it makes sense. Fastest I've ever been in a car is on the autobahn in Germany. 190 kph and it was raining. And people were passing us. And no, I wasn't driving.Whether 80 or 75, it pays to be cautious on I-10 in West Texas. There are apparently at-grade intersections on that part of the road.