Limited time only offer from LEGO Store online.
This free set retails for $29.99 which you can get for free with $170+ purchases.
May 22nd through May 31st - Shoppers who spend $170 AUD/$180 NZD or more on any LEGO.com purchase will receive the LEGO® City 4x4 Off-Road Ambulance Rescue (40582) free as a gift with purchase!