What does my Favorite Card do?
The Favorite Card allows you to boost the attributes that you feel best fit your racing style. To level up the boosts on the favorite card, tap the favorite card and then tap the boost icon on the card that you’d like to upgrade. Upgrading the boosts on your Favorite Card requires you to have Fragments (see What are Fragments). The Fragment cost increases for each successive boost upgrade. The maximum level for each boost is 6. These boosts are applied on top of the boosts earned for collecting NASCAR Driver and Paint Scheme Cards.
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