WASHINGTON (AP) _ AAA says the summer driving season has ended with the lowest national average gas prices for the Labor Day holiday in more than a decade. The auto club says the national average gas price was $2.34 per gallon for unleaded on Sunday. The statewide Virgina average price was just under $2.08 a gallon, and the Roanoke-Lynchburg region’s average was $2.01. Gas prices have been lower throughout the summer season compared with last year. AAA says motorists are now paying more than $1 less per gallon for gas compared to the same time last year. Drivers are saving about 6 cents per gallon compared to one week ago and 28 cents compared to a month ago.