nbc's leeann greg has our report. not much time left for those wanting to cash in on their clunker. >> thank you for buying ford. >> the program some are calling one of the government's most successful economic stimulus plans ever ends monday. cash for clunkers offers rebates of up to $4,500 to car buyers tradg in old gas guzzlers. >>> go ahead. have a seat. >> there are complaint. car dealers who reported delays in government reimbursements, unprocessed applications and others resubmitted because the forms were filled out incorrectly. >> we are now slightly vicms of success. because the thing happened so quick, there was so much more demand than anybody expected, that dealers were overwhelmed with applications. >> some say it is hard to complain about thousand of cars that have been sold because of the program. >> i'm sure in the next few weeks they're going to break the log jam and get the -- rebate flowing. >> the government says the money is there and will go to the dealers. in a plan that has received an overwhel