The Truck O' Luck or Treasure Truck was a promotion done by ABC radio stations in 1967 or 1968. WABC in New York and KQV in Pittsburgh put the Truck O' Luck on the streets loaded with prizes. In Chicago, WLS called theirs the Treasure Truck.

These PAMS Jingles were used on the air. The KQV Truck O'Luck Jingle is an edit of the WABC version.
Truck O' Luck Jingle
KQV Truck O' Luck Promo KQV Truck O'Luck Promo #2
WLS Treasure Truck Jingle

KQV Truck O' Luck Newspaper Ads

August 1968
KQV Truck O' Luck  1968

WLS Treasure Truck - 1967