[backmotor]

My car arrived at the port yesterday! (yeah, I know, who cares, besides me!)
I usually break in a newly-rebuilt engine in my race car by taking it to a track (in a trailer) and driving it under load between corners, while not getting too crazy around the corners. I do that in practice at a race, or at a driving event DE at the track, and it has worked well for me.
Now with an actual car that has to be broken in, it would take almost two hours (driving, not trailering) to get to the nearest track (Mid-Ohio) from Toledo, which is all flat. How do you break it in on highways without traffic interference. I try to do pulls under load up to a certain speed, then slow way down and do it again for a bunch of runs, but in traffic, that would not be practical.
Does anyone have a good way to do this effectively in public?