/|\ Roland /|\
Track cards are awarded in the advanced game for different reasons. The main one however is when you make a special, ie when you satisfy the special conditions of each strategy as outlined in the table at the bottom of page 16 of the rule book.
Ahh ok, thank you. I finally found it under the section titled "Select Strategy" in page 16 of the revised rulebook. To quote:
In the Advanced Game strategies have one additional function. On each strategy chit there are some conditions specified; when a player satisfies these conditions he scores a SPECIAL that allows him to immediately draw a Track Card from the deck.