In need of photo fixing...

Does anyone out there have the ability to remove the grass on the black stripe of the attached picture? The stripe goes from sun to shade and as you can see there is grass that I'd like to not see. I'm creating a poster for our upcoming Muscle Car show and would like to use this pic, which will be a decent size when enlarged, however the grass kills it. I used a basic editor to blot it with black spots but it didn't really work. I can email a higher resolution image (5.5mg). If someone could help me out I would greatly appreciate it!

 

I know this isn't the photo you would use but I did a quick edit
on it with Gimp. I am by no means a good photo editor but I have
messed around some. I can try if you would like me to.
There a lot more abnormalities showing in the paint if you zoom
in even with this smaller photo so I am sure a lot more would
have to be done on the larger image if you are going to blow it up
into a large poster

 

I'd be more worried about removing the golden leprechaun peener poking up from below the chin spoiler

 

Thanks everyone for the offers pm'd to me and the, um, helpful comments and suggestions.

This is the first draft. Still some things to do.