If you think the price of gas this summer in the U.S. is bad, try driving in Europe. Gas is traditionally much more expensive there than here, but the same crude oil price increases that have sent the price of gas past two dollars a gallon here have had a similar effect in Europe. The cost of gas is up 16 percent in France, 14 percent in Italy and 11 percent in Belgium. In Britain the average price in June was $3.27, double what it was a decade ago.