The famous Duesenberg Model J was introduced in December of 1928 at the New York Automobile Show. The car was designed to be the mightiest car ever built in America and that reputation still remains true today. The Duesenberg Model J was also the most expensive car built in America with prices ranging from $10,000. to $20,000 during a period when a brand new Ford was less than $600. and the average American home was $4,000. All Duesenbergs carried bodies that were built by custom coachbuilders.