What does the cryptic crossword clue "Food dispenser placed on the floor of the car? (7)" mean?

The wordplay uses a charade (building blocks). AUTO (synonym="AUTO") + MAT (synonym="MAT") = AUTOMAT The answer is AUTOMAT.

Food dispenser placed on the floor of the car? (7)

Guardian Cryptic #29555 | 26 Across | 2024-12-02 flower