US gas prices drop below $3 a gallon for first time since May 2021

Gas prices dropped below an average of $3 a gallon in the United States on Tuesday for the first time in four-and-a-half years.

​ Gas prices dropped below an average of $3 a gallon in the United States on Tuesday for the first time in four-and-a-half years. Read More Breaking News, Latest News and Videos | CNN