from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The case of a person or group receiving public benefits, although the benefits are not actually needed by the recipient or are obtained by fraud.
The imagery is of a person arriving at a welfare office in a Cadillac automobile (an expensive car) to pick up a welfare payment. The implication is that the person does not need the benefit, or that the benefits are too generous. (Wiktionary)