Russell James Liberman (September 12, 1945 - September 9, 1977) was a United States drag racer from Pennsylvania, known as "Jungle Jim". He was named #17 on the list of the Top 50 NHRA drivers. Liberman was known for driving backwards at 100 mph (160 km/h) after doing his burnout. Using only the above description and what you know about the world, "Liberman was called "Jungle Jim" because he was known for driving backwards." is definitely correct, incorrect, or inconclusive? 