they use 'shells' for stunt's like this, anything containing fluids/hazardous materials etc is stripped out.
i've hung a few of them from the roof of the NEC as well.
that's if they get permission as enduro says above.
it's often cheaper to do that than pay for CGI or get a model knocked up that will stand the rigours of an every more geaky HD'd up audience.
cars cost jack all to make so manufacturers will happily toss a few into the sea to get free marketing 🙂
on the up side we had an Aston DBS for a job on saturday and due to not being able to push them because of some transmission doobery we got to rev the bollocks off it in a small loading bay
I did a sex wee in my pants and i'm not even a big car fan