I came across an aritcle recently (from Cars.com) that listed the pet friendliest cars on the market and thought I would share the information.  A few of these brands will soon no longer be manufactured, but can be a useful if you are looking for a pre-owned car.

As a pet owner, we want to keep our pets as safe and comfortable as we are.  Volvo was found to do the best job of offering products for pet owners, however many automakers offer features and options that are pet-friendly, even though not all of them were specifically designed for pets. 

Volvo:

• Nets that span the space between the ceiling and the backrests of the front or rear seats to keep pets in their own area.
• A collection of metal dividers for wagons and SUV's.
• A Vertical grate that divides the cargo area into halves, separating a dog from cargo or another dog.

Saab: 
The 9-3 SportCombi and 9-5 SportCombi (wagon) include a cargo space divider, cargo mat, cargo apron and cargo guard in the back; the 9-5 SportCombi also has a trunk tray.

Saturn:

The Vue has a cargo management system.

Volkswagen:

The Jetta and Passat wagons offer cargo partitions, while driver accessories include a VW Beetle squeaky toy, air freshener and squishy pillow. Other VW gear includes heavy-duty floor mats and cargo liners.

Nissan:

A Pet Guard Divider accessory that helps keep pets secure while in a vehicle's cargo area. 

Other features that can make traveling with pets easier, and a few cars that have them, include:

• Fold-up backseat cushions, which allow a larger area on the floor for pets to lie down. (Honda Ridgeline, Dodge Dakota)
• Fold-flat second row seats, which open up the cargo area for more pet space. (Most wagions/SUV's/Minivans.
• Fold-flat front passenger seat, which opens up the cargo area for even more pet space.  (Toyota Tacoma, Chrysler PT Cruiser, Dodge Caliber, Toyota Sienna, Chevrolet Equinox, Ford Edge, Nissan Xterra, Pontiac Torrent
   
   
   
  
  Hard-coated and scratch-resistant load floor/folding seatbacks, making for easy cleanup. (Jeep Compass, Dodge Caliber, Toyota FJ Cruiser, Chevrolet HHR, Toyota Yaris hatchback, Chevrolet TrailBlazer, Honda Element, Jeep Grand Cherokee, Honda CR-V)
• Washable/stain-resistant upholstery. (Dodge Caliber, Toyota FJ Cruiser, Jeep Compass, Jeep Wrangler ('07), Honda Element, Chrysler Aspen, Chrysler Pacifica, Chrysler PT Cruiser, Chrysler Sebring ('07), Dodge Nitro, Dodge Dakota, Dodge Durango, Dodge Ram 1500 Mega Cab, Jeep Patriot) 

(Sources:  Cars.com)