When you cross the finish line in a race or leg, Virtual Regatta buys your cards back!
The corresponding credits are given to you at the end of the race or leg. The amount per card can vary from one race to the next. To add them to your permanent credits, simply click on the "Get" button on the arrival panel.
If you do not wish to recieve the credits corresponding to the redeemed cards, and if you do not click the "Get" button, these cards are lost and these credits will not be added to your balance.