Board Thread:Game Discussion/@comment-26829117-20170408184111/@comment-26829117-20170410072345

The prize is just for a bit of fun and to get people really looking for this bug to see if it actually does exist or is, as I believe, a myth that has grown out of the fact that the delta PR's change because of rounding errors.

All that is really required for proof is a screen shot of a car with a PR that isn't correct for a set of upgrades. If you have one for the La Ferrari it would be good, especially if it doesn't match the PR for those upgrades now.

Ultimately, to prove this bug will need a repeatable set of two upgrade paths that end up at the same upgrade levels with different PR but evidence you can have the same upgrades with different PR is the first step.