Why can I not get Desc order for total_time_driven_at_this_trip?
SELECT DISTINCT (`name`),
MAX( `total_time_driven_at_this_trip` ) as trip
FROM `users`
LEFT JOIN `trip_nsws` ON users.id = trip_nsws.user_id
GROUP BY `user_id`
ORDER BY `total_time_driven_at_this_trip` DESC
LIMIT 0 , 30