Some road driving tidbits
There's construction in MI on I-75 btwn Monroe and Detroit. It's not that bad, still two-lane but the lanes are shifted, but could be more interesting if towing something. I'd still take that route myself.
The only way around it is to take US23 north from just south of Toledo (Perrysburg, IIRC) to I-94 east @ Ann Arbor.
The only other annoying thing I'd warn of is one pothole that's hidden under a bridge in the middle-of-three lanes on a sharp curve coming into downtown Detroit near the old Tigers stadium.
Oh, and don't speed around the oil/gas/petroleum holding tanks just south of Detroit. I'd say there's a trooper 'round there about 50% of the time.