Having planned to idle production plants for a mere ten days over the winter break, Chrysler is responding to weak sales by extending the holiday shutdown of several plants to three weeks or more. The WSJ reports that Chrysler’s Windsor and Brampton plants (minivans, 300/Charger/Challenger) will shut down starting December 21 and will idle through January 18. The Toledo plant (Jeep Wrangler) will also idle beginning on December 21, and will resume production on January 11. Chrysler is also said to be considering extended production shutdowns at its Detroit Viper factory (which is entering final production anyway) and an unspecified Ram plant. Unless December sales numbers turn out to be humdingers, this winter vacation could possibly go on even longer, as Chrysler struggles under falling sales and a 64-day supply inventory.