The largest gas price increase in 30 years has hit Pueblo, Colorado, where Israel Rodriguez and his two dogs walk to monitor the rising price of gasoline. The cost of gasoline has increased significantly since the mid-1990s, with diesel prices rising to over $5 per gallon in some areas. Meanwhile, Zac Grant, who supports President Donald Trump's war against Iran, used an app to find the lowest prices in the area and spent more than $90 on his tank.