I Should Survive The Subway Sub, Right?

OK, so I got a footlong from Subway and ate half of it before going into work.  I stashed that other half at the work fridge and remembered to take it with me when I got done, which is something I was afraid I would forget to do.  What I did forget was bringing it from the car to the refrigerator at home once I got home.  Instead, it stayed lain on the passenger-side mat until I realized it wasn't in the fridge when I checked yesterday/Sunday morning.

So the government says (until last Monday, but hey, scientists thought it's a rule, so I'll follow it) that you shouldn't allow unstable food at room temperature for more than two hours (and one hour if it's really hot outside).  Well, I think it was barely above freezing when I got home, and it dipped well below freezing overnight, so that would arrest any bacteria that would've formed in the sandwich, right?  Sure, I drove the car to The Current's concert at First Avenue on Saturday night and I put the heat on, but that was only 45 both there and back at most, and besides, it had to have been much colder down on the mat, right?

Just ate the rest.  I noticed as I bit in there was a bit of ... iciness in it.  I looked and saw that a bit of frost formed on the lettuce.  So the sandwich did freeze overnight in the car.  I was hoping 13 hours of it being in the fridge, which is set at 37 degrees, would "warm" it up to where there wouldn't be any ice, but guess not.  I know from previous bad experiences that my gut and excretory system do not like cold items in general, so I now not only have to worry about eating this sandwich that might have been too hot, but also eating this sandwich that might have been too cold.  And I'm doing this before a workweek.  Great.