UPDATE: Since our original report this morning, the U.S. House of Representatives voted to add another $2 billion to the Cash for Clunkers coffers. Senate is expected to vote on the measure next week.

WASHINGTON, D.C. -- Media outlets began reporting late yesterday that the highly publicized Cash for Clunkers program has run out of funds, just one week after its launch.

The Consumer Allowance Rebate System (CARS), the official name for "Cash for Clunkers," offers vouchers up to $4,500 to new car dealerships for consumers who trade-in their vehicle for a new, more fuel-efficient vehicle. The program, for which the government allotted $1 billion in funding, was originally expected to continue through November.

According to the latest reports from the White House, the program should be able to continue through the weekend while the Obama administration works with Congress to find additional funding. The program has reportedly run low on funds as consumers rushed to trade-in their vehicles for newer models. Legislators were alerted to the possibility that it may run out of funds when they learned that an estimated 20,000 certificates for vehicle swaps are still waiting to be processed.

The C.A.R.S. program was also criticized earlier this week when the Environmental Protection Agency unexpectedly revised the list of cars that qualified for the program. The EPA was said to have changed the fuel economy ratings of many older vehicles so that some became ineligible for the program and others that did not qualify before now do. The change caused confusion for consumers who purchased vehicles in recent weeks under the expectation that they would receive a C.A.R.S voucher.