In anticipation of its upcoming 2007 models arriving, Nissan has decided to swallow a hard pill and shut down production at its three U.S. plants for six days by the end of July. Scuttling its plants in Canton, MS and Smyrna and Decherd, TN will trim 18,000 vehicles from its previously planned production schedule.

The first shut down day occurred on April 17, the second will be May 26th and lengthen the plant’s Memorial Day weekend, while the final four will give workers a very large Fourth of July weekend. All six days will be treated as vacation days for employees, which we assume means they’ll still be on the clock.

Additional down days could be added if sales slow even further ahead of the ’07 arrivals, which include the Versa Hatchback and Sedan, Sentra, Quest, Altima and Altima Hybrid, and Infinit G35 Sedan.

[Source: Nissan]