2008 Ford Taurus is Hank's temporary car.
The Taurus is Hank's temporary car while his Jeep Commander is under repair following the shooting with Tuco. ("Grilled")
After Badger was busted, Hank, Steven and Getz hide in the Taurus to film the transaction between Badger and the alleged Heinsenberg, which should allow his arrest. ("Better Call Saul")