Moving to Buenos Aires may attract many people because of different reasons. If you are used to driving your own car in the US or other country because you need to deal with the terrible transportation forms, living in BA isn't that bad.
The groceries and malls are just around every corner, all your needs are just a block away.
No worries for a car less living.
Link: Moving to and living in...Argentina: Living without a car in Buenos Aires and surrounds