Car insurance! How bad of a beater will you drive? [View all]

Every year the value of my car goes down, as well as the number of miles, but my insurance keeps going up. I'm considering selling my current car, a low miles hybrid, and getting a "beater". I'm 69, currently retired and living on Social Security only. I may pick up some part time work in August when tax season heats up, but I have some doctor appointments and family caregiving commitments before then.

So, how low, in value, do you go before you drop your comprehensive insurance? I'm looking at vehicles between $2 & $6K.