Originally Posted by Balc0ra
Same way that I did it in Burnout. Wait for a good map version of it. Open it in MS paint and cross em off one by one.
Ths strategy worked like a charm for the billboards, I found a map with all of them then compared it side by side with the map in the autolog website. Not so easy with the gates since neither the game nor the website give you a map of the gates that you have crashed. Will have to grind it out going to every location on a completed map. Not looking forward to that.