I borrowed a battery charger from my grandfather today. I spent the last hour or so making sure the battery was charged, which to my surprise it still was mostly charged, and cleaning out the car. The battery seems to be fine.

The bad news is that I'm probably going to have to replace all four tires. One of the rear tires is split from being flat and sat on and the two front tires are both nearly bald (from driving on them harshly, most likely). I'd forgotten the shape the front tires were in.

Tomorrow, during the daylight, we'll find out if the car still runs or not. I'm crossing my fingers.