As gas prices across the US continue to rise, Americans are looking for cheaper ways to fill their tanks - and some are even seeking deals in another country. In the US state of California, which consistently ranks among the highest in the nation for petrol prices, some are heading across the US-Mexico border in search of savings. The average price of petrol in California is currently $5.91 per gallon and $4.24 per gallon nationally, AAA data says. It's a different story in Mexico, where earlier this month President Andres Manuel Lopez Obrador promised to control petrol prices by subsidizing fuel. On TikTok, Julio Vaquero, a resident of San Diego, just 17 miles from the border, posted a video showing how he filled up his Honda Civic in Tijuana for $40. He told the BBC that one week later it cost him $70 to fill up in California.