I am now turning my attention to the car rental. We intend to pick up the car AFTER our visit to Chicago and I'm looking for suggestions for convenient, quieter pick-up points not too far from Chicago. I think I read that South Bend airport may be an option but it seems to be quite a way from Chicago - any other suggestions, closer to Chicago but not too close? Somewhere we could get to by public transport.
We have only rented in the US once before, picking up and returning the car to Boston Logan airport.
Is it usually more expensive to pick up/ drop off at airport locations?
Thanks for any advice!