I just updated my blog.
http://ziggy12345-myspeedattemptcar.blogspot.com/
Testing didnt go too well as I had radio problems. Turns out its d=critical where you put the reeiver in the car if you want decent range.
I have installed a 9db antenna on the TX and have 0.6miles range now so it shold be no problem running the car, seeing it is another matter.
Cheers