The production-ready supercar will be finished in 2019. At that stage grant assistance will stop but work will continue.
If there is a car which will never die, then it might be Pagani Zonda. It is 18 years old, but it still has new features and looks to offer, see it here
Audi just revealed its new upgraded models Audi R8 Performance Parts and its little brother the TT RS Performance Parts at its 2017 Summit, see them here