On the car thing, if you can't improve it maybe you can decrease it. Have you investigated your local mass transit options? I travel entirely by train, and it's very comfortable because I have room to change position whenever I want. Also, I get my commute time back as reading or gaming time. Granted, I live in NYC, which makes it easier, but many cities have more options than you'd expect.

I realize moving closer to your destinations, or to a city with better mass transit, are very big deals and probably not worth it for the ergonomics alone, but next time you move anyway, this may be worth keeping in mind.