New car with only a couple hundred miles on the odometer, all city driving and very short highway trips so far (lots of RPM ups/downs).
Gotta take it on an eight hour (each way) trip to visit relatives for X-mas.
What suggestions do you all have for breaking a car in properly while driving on the highway?
Last time I did anything like this I was driving a car from TN to PA and just wound up varying speed every few minutes by going, say, 55/75/60/75/65/55, and switching it up. Not the most fun way to drive for hours.