Based on the speed of the background cars, it does not look like this was a real race at all. It seemed pretty slow to me. But, assuming for argument sake that it was, the Cadillac is running about 630 RWHP per one of the posts on YouTube. The Caddy is heavier but, depending on the gearing and what gear both cars were in at the time of the go, the weight may not have made much difference at the speeds involved. As for posting the video, it is against Forum rules if it was a race. But, to me, the video seems like a mild acceleration run and if that in fact is all both cars can do, they are both dogs.