Gas prices are up again, with Charlottesville’s price per gallon up 20 cents over the same time last year. Tammy Gobert of AAA- Mid-Atlantic says the cost of filling up your tank might be higher on the first Monday of May than it will be at the end of th month. Next Monday will be Cinco de Mayo and the next holiday that most people observe will be Memorial Day. That holiday will be May 26th. Memorial Day will be one of the busiest travel holidays of the year.