We will be heading up to CMU in Mt. Pleasant, MI this Friday to pick up our son. It is all freeway(70-75) with a small stretch of rural road with a speed limit of 55. I gave heard stories about how you can't go over 55 for the first 500 miles. I think I read somewhere where that is only for AWD and we have FWD. My question is do we do some freeway driving before we go on that long trip(150 one way) or just head on out on Friday w/o that break-in period. We have had the Traverse since Sept 16th and it has no time on the freeway and only 65 miles on it so far(I work less than a mile from home). Thanks!