Hi Rossbro:
There is not a 70-mph PSL road within 50-miles of me so traveling at that "real world" speed is not only dangerous
in every locale in the world but also illegal in this one.
We did not have the Mazda2 for enough time to do any steady state let alone the temperatures were in the lower 5 percentile of what the average driver will experience over the life of the vehicle. It just did not work out that week given the short time we were allowed to drive it
Wayne