By having all the electrical stuff crap out on me on the way home.
First, I started noticing that the air flow turned from ambient air to HOT air...my first thought was something funky with the CCU, since I've had so much trouble with it.
Then my blinkers weren't working, radio wouldn't come on, windows would BARELY go up (lucky I got them up).
When I came out from dinner with the fam, it wouldn't start...wouldn't even turn over. I jumped it from the wife's SUV, and it drove home fine.
Alternator?
If so...dang...tough to come by on a Saturday. I could go poking around a pick-n-pull, although I've never been to any around here.
Ahh, Saturday.