Good question, I couldn't find any schedule and the post on their FB page doesn't help either. I think last time around they announced it close to the dates they were going to visit a place but I may be wrong.
Win 1 of 20 $100 Gift Cards from Coles
1
Dates
Closing Date
30/11/2016
Draw Date
01/12/2016
Prizes
Description
$100 Coles Gift Card.
No. of Prizes
20
Total Prize Pool
$2,000.00
Entry Requirements
Open To
Australia-wide
Entry Limit
One per person
Entry Methods
Instagram
Prerequisites
n/a
Visit the Coles Food Truck during the Promotion Period (1-30 Nov 2016), snap a creative photo at the event and upload to Instagram with the hashtag #colesfoodtruck (Instagram account must be made public).
Entries judged on creativity.
NOTE: There is some information on truck location on their Facebook post but not really helpful.
Related Stores
Where do you find the food truck?