Wow, thanks a bunch for that. One correction though (my bad)... i meant that i drive 85-90km/h on the 100km/h highways. Coincidentally, i also drive about 85-90% of the miles on the highway as you stated. With a shift point of ~65 and comfortable cruise of 70 (that is, comfortable because i'm a little above the downshift point so i don't need to worry about +-2km/h), then my highways cruise of 85km/h is not very high into third gear.
Again, thanks for putting it all together.
