Just found out that the car was retired in March 2016 from active police duty and was purchased by the old man's friend for $3100. That friend then sold it to the old man that I'm buying it from, who never told me what he bought it for. Now of course, my mom is flipping out saying I shouldn't buy the car because she thinks there are "dishonest shenanigans" going on with an old man who doesn't even know how to text on a phone.
To be honest, $3100 is incredibly cheap for this car. Even $4000 is a steal of a deal. Now trying to consider whether I should try to whittle the price down any further or just go for the $4000 (which is $850 less than I found the car starting at).