I left a note on the Jetta. The only damage to it is a very shallow scrape on the fender. It looks like I didn't contact the tire or wheel. According to Massachusetts insurance law, I'm of course at fault for hitting the Jetta, since the actual at-fault driver left. I'm really hoping the Jetta owner is sympathetic and lets me pay for it without going through insurance.
I had a cop come and take a report, on the off chance that the cab driver later decided to be honest, or somehow became otherwise involved with the police. The officer was pretty decent, except he said that my car was definitely driveable and was just out of alignment. Actually, the front wheels are out of alignment from one another, so they're both pointed out, and it made squealing and clunking noises when I drove it. The steering wheel was ripping out of my hand any time I drove over a tiny crack or cup lid or anything in the road. It felt like the tie rod might have gotten messed up.
I got home last night, realized I didn't get my license back from the officer. Called the police station, they were really nice and got him on the line, but he said he gave it back. Maybe it will show up in his car or something and he'll mail it back. I'm going to wait a week or so before replacing it.
This morning I took my car to my mechanic, driving slowly on backroads. It's amazing what assholes people are. I was actually right around the speed limit on most of these residential roads, but got honked at pretty much the whole way there by people who eventually passed me to do 45 on residential streets where kids were walking to school. Nice.
When I got it to the mechanic, I attempted a tight turn for the first time, to turn the car around and pull it into a spot in his lot. The right front axle made a big clunk and a crunch that sounded like the CV or something going. When I turned the steering wheel, the right wheel didn't move at all. When I left it at the mechanic, the right wheel was pretty much pointed straight forward in the wheelwell, except that the top of the wheel was leaning out of the wheelwell and the bottom was contacting the ground in the correct place. The left wheel was turned sharply to the left. This does not look good. I guess it's possible there's not actual major damage to parts, and it's one of those things where I broke just the right bolt or bracket or something to make it seem like the axle fell apart. Let's hope so.