Art Deco as a movement pretty much petered out in 1939...of course, many cars carried elements of art deco design well into 1942 when automotive production stopped due to WWII.

The '41 Plymouth has many elements of Art Deco inspiration. The horizontal "strakes" in the fenders, the hood ornament, and the"wings" on the bumper are perfect examples. What sticks out to me most of all, however, are the marker lights just above the headlights. If I had to pick one art deco element it would be those lights.

The first "art Deco" car would be the Chrysler Airflow which ushered in the streamline era.

1970 Dodge Charger R/T Hemi Orange U-code 4-speed
1971 Jaguar E-Type Series 3 V-12 4-speed 2+2 Signal Red.