The Sloppy Jalopy

From Muppet Wiki

The Sloppy Jalopy is Oscar's junk car in Follow That Bird. Since his horn is broken, Oscar has a Honker in the backseat to fill that function. A ragged umbrella covers the back area, and a "Big Bird or Bust!" sign is hand painted in a ragged scrawl. The license plate reads, "SCRAM."

Oscar's car has also been featured on Sesame Street, but with a different look and vehicle make. In The Sesame Street Special, Oscar uses a dilapidated taxi cab.

This car is also featured in Fiesta, where it was being used as carosa (float) by the kids to replace the Rosita's broken float. Elmo thought that a fairy godmother transformed his pineapple into this Sloppy Jalopy as the float for the kids.

Recently, the Jalopy was seen in Episode 4134 of Sesame Street, in which Oscar and Grungetta drive it in a race.