I think it's a good start. The interior sound is like the real car's (especially kudos on the beep sounds), but it sounds like there's too much wind noise. The exterior doesn't sound high pitched enough. And as others mentioned, having a speech being played every time you start the car has to be the most annoying thing.
I'm using that because someone already stole from me another sound. I do the same as VRC does or did some time. Thank you.