How do I get rid of the smell of dog piss from my car's

Should have got a cat.

Get a dog with less stinky piss to piss in there

>>16411503
That sucks, OP.
Use a mixture of baking soda and water, can't tell you what parts on the top of my head but it worked for the mildew when it flooded my wife's car. Apply the baking soda with a sponge or rag. Once it dries use a mix of vinegar and water to get it out. Should absorb it, especially if its not dry yet.
Sucks about your dog peeing in the car though, mine just sleeps on car rides.

>>16411503
Try pissing where the dog did to re claim your territory

piss on your dog in retaliation

then >>16412508

You need to destroy the source of the smell. Usually this means removing the head and burning the body

Use nature's best urine enzyme removing fluid. Its very good.