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Stanley Marsh 3, left, and longtime friend and photographer Wyatt McSpadden, pose in Marsh's Amarillo, Texas, office, March 12, 2009 in front of some of the pool balls that eventually will dot a oversized pool table (about the size of a football field) that Marsh plans to hide somewhere in the Texas Panhandle. Marsh says "Art should be hidden and I believe people should see it by surprise," (AP Photo/Betsy Blaney) ( Marsh.jpg )

January 1981: A memorial to cadillacs created by Texan businessman Stanley Marsh. Every time he buys a new Cadillac he part-buries his old one in concrete on his Amarillo ranch overlooking the Expressway 40. (Photo by BIPS/Getty Images) ( 01f/05/huty/14972/13 )

Four-year-old Sarah Mercer of Amarillo, Texas visits "Cadillac Ranch" on historic Route 66 in Amarillo, 06 July 2003. As a tribute to America's relationship with one of it's favorite automobiles, a collective of artists called Ant Farm in 1974 placed 10 Cadillacs, ranging from a 1949 Club Coupe to a 1963 Sedan, in a wheat field located west of Amarillo. Cadillac Ranch is a popular stopping off point for tourists on historic Route 66 which stretches from Chicago to Los Angeles. (AFP PHOTO / Robyn BECK) ( HKG2003070725600 )

In this Nov. 28, 2012 file photo, millionaire artist Stanley Marsh 3 is booked into the Potter County, Texas, Detention Center. Stanley Marsh 3, whose partially buried row of Cadillacs became a road-side tourist attraction in the 1970s, died Tuesday, June 17, 2014. He was 76. (AP Photo/Amarillo Globe-News, Michael Schumacher, File) ( Obit Marsh )

Visitor Ronny Davila from Tampa, Florida adds his graffiti to a car at "Cadillac Ranch" on historic Route 66 in Amarillo, 06 July 2003. As a tribute to America's relationship with one of it's favorite automobiles, a collective of artists called Ant Farm in 1974 placed 10 Cadillacs, ranging from a 1949 Club Coupe to a 1963 Sedan, in a wheat field located west of Amarillo. Visitors are encourage to draw or paint on the cars. Cadillac Ranch is a popular stopping off point for tourists on historic Route 66 which stretches from Chicago to Los Angeles. (AFP PHOTO / Robyn BECK) ( HKG2003070725604 )

A visitor tours the "Cadillac Ranch" on historic Route 66 in Amarillo, 06 July 2003. As a tribute to America's relationship with one of it's favorite automobiles, a collective of artists called Ant Farm in 1974 placed 10 Cadillacs, ranging from a 1949 Club Coupe to a 1963 Sedan, in a wheat field located west of Amarillo. Visitors are encourage to draw or paint on the cars. Cadillac Ranch is a popular stopping off point for tourists on historic Route 66 which stretches from Chicago to Los Angeles. (AFP PHOTO / Robyn BECK) ( HKG2003070725602 )