I have to buy a boring car.

I bought a '13 Impala with 150,000 miles cheap. Salesman's car. Highway miles, and serviced regularly. Looks and drives like new. $3,500. These, and several other cars in it's class, regularly go an easy 250,000 miles, if they are kept up. Not to recommend you purchase one with this many miles, but you might look at some program cars.