For me, the most important thing of those cars (R4, N5, Proto,...) is the manufacturer side. A Ford with PSA engine? Where is the intelectual and comercial make ownership. When (if) a manufacter go to law to protest royalties... the case will be ugly. Those cars are cheap cause used hours and €€€ of research of that manufacters. I am against those travesty cars. All makes have comercial deals but after that.... what the point to PSA have winning car with Ford taking the goods? Or Ford having R5 and someone run one cheaper and low performer travesty Ford?