***NOTE: You should find this Autobot while you can as this area is flagged for development at some point in the future. If you decide to find this one, you might want to also find Autobot #13 (GC7RJ72) and Autobot #16(GC7RTWN) at the same time as they are in the same area.***
A great battle was fought here and unfortunately this Autobot Transformer fell by the hands of the Decepticons. This Autobot was taking the form of a 1985 Hyundai Pony 1400GSL.
You must find his Energon Cube (and sign it).
It appears that Decepticons came and destroyed the Autobot and cache container. Pictures of the 'before' and 'after' can be seen below:

Be sure to private message me if you know of any other undiscovered Autobot burial grounds (old cars/trucks/motorcycles/skidoos or random scraps of metal) in, or near, Ottawa ;) - and don't forget to 'favorite' these if you are enjoying the series.
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Transformers: Robots Geocaching in Disguise
For a list of every cache in this series, look at the bottom of the 1st cache of this series (here).