The Aussies are killing rubber down under. 

A world record was set at Australia's Summernats Car Festival in Canberra last week when 69 cars performed the world's largest burnout. The previous mark for the number of cars simultaneously performing a burnout was 49, according to the keepers of all things record -- the Guinness Book of World Records.

According to Summernat organizers, this year's attempt burnout spectacular ended with about 30 tires blowing during the 30-seconds