Would it work better for you if I blasted the Subaru with salt first and then added a rusting agent to the sides of the car with the information for the embossed look? If so can I do it in your shop? lolz.
Subaru sucks for not being in WRC anymore. I'm tired of seeing only Citroens and Fords in the races, some other brands like Mitsu, Subaru, etc... would make it more interesting.
I don't know about other brands but from my Toyota/Lexus experience you can shift into neutral while the car is in motion, at least on the RX300, RX330, Corolla, Celica, and Rav4.