There's a shot of it available through Alamy ( http://www.alamy.com/stock-photo-ja...-the-wall-of-a-multi-storey-car-50900068.html ). Looking at the Alamy one, there appear to be brackets holding it in place from underneath. No bits of re-bar sticking out of the stubs of concrete suggest that it's an installation rather than Mrs Morse's parking skills!