i use a sherpa carrier for car travel. it doubles as a carrier for trips to the vet and a carseat and it is also airline approved. they come in a variety of colors and sizes! it has a belt loop where you can buckle it in with the seatbelt in your car. it does come with a removable wool or wool like padding for the bottom but you could easily swap it out and put a blanket instead of the pad it comes with. i normally have it zippered shut while driving that way just in case if we were to get in an accident she is safe from debris getting on her. she has the small size sherpa in brown with pink trim. good luck!
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