Auction disguised as a contest
This contest is a con job. It is impossible to win these tracks without spending gems and the final track is just an auction see who will pay the most to get one track.
To get that last track you need to be in the top 5 percent of egg collectors. Translated in to reality, that means the people who are willing to spend/buy to spend the most gems for respins on the prize wheel to get the bonus eggs.
This is all a trick. Many of us were disappointed that we were expected to pay 400 gems for a couple of tracks in the tier 2 Halloween track bundle. For me that would have been 200 gems per track as I already had 3 of the 5. I was not willing to pay that KNOWN PRICE.
What we have here is a track auction disguised as a contest to hide how many gems these tracks will cost and even worse that cost won't be uniform. Some people will pay substantially more for these tracks because the majority of the eggs will come from the prize wheel requiring respins at an ever increasing cost.
I call BS on the trickery and on top of that, this isn't even really fun. I'm not interested in a game that wants me to play every six hours when "playing" is driving stupidly slow to find an egg then spend 20 minutes trying to creatively crash so you can potentially fall into where the egg was stuffed. Oh and because the eggs frequently require "lucky crashing" it will make the egg spot on the prize wheel smaller and harder to land on so you'll need to spend more gems on respins to get the absolutely required prize wheel gems.
I'd say this "contest" was pretty sneaky but that would be giving it too much credit for actually being a contest when it definitely is not. It's a 20 day cash grab combined with a test to find who is willing to pay the most for a track.