Salina ? City bus passengers in Salina thought it was nice of two young strangers to give them each a Christmas card.

But they were downright shocked when they found a $20 bill inside each of the cards Tuesday afternoon.

CityGo driver James Lucas said the unidentified boy and girl — he guessed they were 17 or 18 years old — probably handed out more than a dozen of the cards to his passengers. They were dressed casually and wore no Santa Claus clothing or holiday garb.

Lucas — who was handed one of the cards himself — said he didn’t recognize the pair as regular passengers.

No one on the bus knew that the envelopes contained cash until after the mysterious gift-givers had gotten off the bus.