Gordon Wilkins and Maxwell Boyd cover the world of American motoring.

American motorists have 500 cars to choose from at the Tenth International Automobile Show, which opened over the Easter weekend at New York Coliseum. But the newest models from Detroit are copies of thirty-year-old Mercedes and Alfa-Romeos with 1966 V8 engines under the bonnet. What is the reason for this return to the past? Invasion by European sports cars, or boredom with the modern U.S. product?