Hey Dere Y'all,
I have done some casual research and have come up with some more translucent cars:
1st off from the 2011 Tar-J Halloween 5-Pack:
Cloak and Dagger-


 


And actually all six [including this one] have translucent bodies over metal and plastic chassis.
Next up from the same 5-Pack:
Fangster w/translucent body over a metal chassis


And unfortunately due to some cell phone camera problems, some text 411:
Included with the Dynamite Car Launcher is an orange translucent CCM Country Club Muscle
Included with the 2011 Sky Jump set is a dark red translucent CCM Country Club Muscle
Also it seems that this car has been released either in a track related series or in an actual set since 2008.

And speaking of track related there is a dark green translucent Power Pistons in the 2011 Sky Jump 5-Pack.

Spencer?:>}