The Scottsdale sales, part of a multiday car-a-palooza that attracts thousands of fans and wealthy collectors, are expected to top $285 million this year, according to Hagerty, a collectible car insurance company.
Much of the attention is on muscle cars, which have been slow to recover from the recession but have surged in price over the past year.
But all makes of American cars and European racers have been selling at strong prices.
At Barrett-Jackson, a 1969 Chevrolet Camaro COPO 427 sold for $330,000, which was above its estimate.
RM Auctions sold a 1966 Shelby Cobra 427 for $990,000—right at its low estimate. A 1970 Chevrolet Chevelle SS 454 LS6 Convertible, which had a starting estimate of $225,000, sold for $225,500 with commission.
Read more: There were also some more surprising successes, especially in trucks.