Ezra Griswold was the lone settler who traveled by oxcart. Thus, the Costa Rican oxcart was created. The Korean road traffic was predominately by oxcart. The plays "The Oxcart" and "Marisol", and the musical "In the Heights", are examples. It was part of the Red River Oxcart Trail. The Oboroguruma is a ghostly oxcart with a face on it. The end result of GUSTO would be the Lockheed A-12 OXCART. This evolved into Project OXCART, under which the CIA developed and operated the Lockheed A-12. Like the A-12 Oxcart, the D-21B Tagboard drones remained a Black airplane, even in retirement. Chinese tracking of the flight was apparent, but no missiles were fired at the Oxcart. The "oxcart game" is a display of strength. The Oxcart vehicle photographed 84 primary targets plus 89 bonus targets. The CIA program to develop the follow-on aircraft to the U-2 was code-named "Oxcart". Carts may be named for the animal that pulls them, such as "horsecart" or "oxcart".