rode to and from the vets office with my cat (she was in a crate). It was totally fine. But really smelly. I know that the name of the company has to do with being carbon neutral, and not the air in the cab. But, had the cars not smelled so bad inside, I'd have given another star. They both smelled like cigarettes and bad air freshener.
Also, the rate was two dollars different on the way back than on the way there. And, the second guy didn't know the streets very well...maybe that's why.