It's SummerNats in Australia, and Damien (OnFourWheels.blogspot.com) has posted galleries to share the evolution of Holdens, Fords, etc from the 50's to current models

 looks so close to a 55 Chevy, but a little smaller

the above are airbrushed cigars that from a distance, appear as the fender vents

For tons of SummerNats coverage, and all Australian cars! http://onfourwheels.blogspot.com/