What is "skid marks"

n. (skid mark English)

Skid Marks is a 2007 independent comedy film about two rival ambulance companies and their attempts to maintain themselves in their city, directed by Karl Kozak and written by Kozak, Don J. Rearden and Kraig Wenman. The film had its theatrical premiere on October 5, 2007, in San Diego, and in 2008, screened at the Dances With Films Festival in Los Angeles.