There are many bars and tabs in addition to packs as well as specials, events and other items displayed on screens that players don't need. It can happen to those who keep collecting packs and completes challenges in only one or two minutes. Every time a card is received, hit the compare button. If the card is an improvement, save it. If not, add it to the set. If it's not part of a set, try auctioning it or quicksell it. Keeping it organized saves double-digit hours throughout the year.
Don't try to auction off any single card until you've looked over the sets first. Some sets are only accessible by playing single-player challenges, other sets are something you can make a profit with a little luck over the course of the year.
This is a great way to earn the exact cards that players who sell their vehicles get, but without the expense. You can add additional players to any set with the patience. Even if it's not an upgrade, the reward always fetches more than the total of the components that make up the card. It's best to stay clear from the shop completely since cards become better and better as the seasons change and any money spent at the stores for cards today will be to be thrown away when the cards of tomorrow get released.
The worst cards to waste are the ones that have a limited-time. They are appealing, as they come with sufficient challenge points to finish a collection of fantastic cards. However, the excellent card will not be equally great when the next limited-time event occurs.
The game's algorithm automatically ranks cards based on a number of variables, all the way to 99. However, those who look at the statistics will notice that some rank 78 cards frequently surpass rank 99 cards. It's essential to review the individual statistics.