Some Tesla employees will ring in the New Year on a sales floor this year as the automaker tries to liquidate its inventory of Model 3 sedans — and even its more expensive Model S and Model X vehicles — before the federal tax credit for EVs is cut in half.

In a list of updated hours, 44 of the stores, including locations in California, Minnesota, Nevada, New York and Ohio, are open until midnight Monday. Tesla has more than 100 stores and galleries in the United States. Calls made to several of these stores indicate these locations have a mix of Model 3 sedans available for pickup today. Sales associates didn’t provide specific numbers.

After midnight Monday, the $7,500 federal electric vehicle tax credit will drop to $3,750 for anyone buying a Tesla vehicle.

Tesla CEO Elon Musk has been using Twitter to warn of the expiring tax credit for months now. Recently, the pace of promotion has escalated as Tesla’s inventory of Model 3 vehicles in the U.S. has persisted.

US $7500 tax credit drops in half at midnight! Following Tesla stores are open until then https://t.co/F9saXNhnHP — Elon Musk (@elonmusk) December 31, 2018

The company reportedly had more than 3,300 Model 3 vehicles in inventory in the U.S. as of Sunday, according a blog post by Electrek.

Now with just hours left before the federal tax credit drops, Tesla and Musk are making a special effort to reduce the Model 3 inventory in a final sales push.

Earlier this year, Tesla hit a milestone when it delivered its 200,000th electric vehicle. The achievement was a noteworthy occasion for an automaker that didn’t exist 15 years ago. However, it also activated a countdown for the $7,500 federal tax credit offered to consumers who buy new electric vehicles.

The tax credit begins to phase out once a manufacturer has sold 200,000 qualifying vehicles in the U.S. Under these rules, Tesla customers must take delivery of their new Model S, Model X or Model 3 by December 31.

After December 31, the federal tax credit is cut in half to $3,750 for new Tesla customers. The tax credit is reduced again after June 30 to $1,875 before disappearing altogether at the end of next year.