I use a seatbelt system for both dogs, and a seat cover plus blanket to cover the backseat where Delgado lies to keep hair, scratches, other potential gross things from harming the actual seat.
Jasmine - Female Miniature Poodle - born Aug 15, 2010
Loker Delgado Von Stalworth - Male GSD - born Jan 26, 2012
Koda & Zazu - 5 year old male cats
Alex - Male Cocker Spaniel (rescue) - RIP Cuddlebug 2007-2010