Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Petrol at one Michigan service station hit 47 cents (33 pence) a gallon last Sunday as a price war between local stations forced the owner to reduce prices to levels not seen in decades.

The global oil glut is squeezing the US shale industry