select json_build_object(
               'type', 'FeatureCollection',
               'features', json_agg(ST_AsGeoJSON(t.*)::json)
           )
FROM (SELECT parking.osm_id, parking.access, parking.name, st_transform(parking.way::geometry, 4326), ST_Distance(parking.way, point.way) distance FROM planet_osm_point point CROSS JOIN planet_osm_polygon parking WHERE point.name = 'Cortlandt Town Center (Walmart)' AND parking.amenity = 'parking' AND ST_DWithin(parking.way, point.way, 10000) ORDER BY distance ASC LIMIT 5)
AS t(id, access, name, geom, distance);