Vespa returned to the American market in 2001 with a new, more modern style ET series, in 50 cc two and four stroke, and 150 cc four-stroke. "These adjustments in engine power and the production of high-end “touring” Vespas make it apt for long-distance driving." According to the Motorcycle Industry Council, U.S. scooter sales increased fivefold over six years, swelling from 12,000 units in 1997 to 69,000 units in 2002. Vespa sales in the U.S. increased 27 percent between 2001 and 2002. The 65 "Vespa Boutiques" scattered throughout the U.S. gave scooterists a place to buy, service, and customize Vespa scooters, and outfit themselves in everything from Vespa watches and helmets to Vespa jackets, T-shirts, and sunglasses. Vespa restarted its American sales effort, opening its first boutique on Ventura Boulevard in Sherman Oaks, California