No idea what it is, but apparently this was a car show in New Zealand.
This is the only other picture I can find of it:
I don't get that open hood though
It's just a thing some people do at car shows - remove the bonnet so people can see what's been done in the engine bay.
Quite a lot of car shows (at least around here) require the hood be open for your car to get judged. In fact (and again...around here) you can tell the seriousness of the show and its judging by if they allow a closed hood....if they do, it's not a real show. Depending on your entry class, judges are looking for modifications....looking against mods (if entered as stock) and for overall cleanliness....everything should look brand new.
That's why I rarely enter those kind of shows LMAO!