The highest number of coins you can earn on any Coin Rush run is 30,000. That makes it harder to reach the million coin and ten million coin mark. Also, if someone's StreetPass record is 30,000, you can't beat it. You can only tie it. There shouldn't be a 30,000 limit.
There Shouldn't Be a 30,000 Coin Limit
This edit will also create new pages on Giant Bomb for:Beware, you are proposing to add brand new pages to the wiki along with your edits. Make sure this is what you intended. This will likely increase the time it takes for your changes to go live.