Michigan has been dealing with mechanical issues due to the P42s for a while now. As of today, I'm still not sure that the Chargers have been put into service on all of the AML turns. I know 364/365 and the morning Wolverine has them but I'm fairly certain the mid-day trains still have P42s. Doesn't help that the schedule is so tight that boarding delays are becoming an issue and CN can be...uncooperative on some days.I don't think Amtrak at present has a generic sustainable model to develop and operate a reliable and fast corridor anywhere outside of a couple of places in California and the NEC. Even the much vaunted Cascades Corridor is pretty iffy at the present time. There is potential for getting it right perhaps in the Hiawatha Corridor and the Michigan Corridor. I don't think there is any hope for the Lincoln Corridor, other than regularly fattening UP's purse for nothing.