Lamborghini SVJ Car History

All the Lamborghini SVJs that I have bought from the auction house all have very strange car history’s
Almost all the stats are maxed out at 999,999,999 and time driven is usually around 50,000 hours or so along with the miles driven being in the negatives
obviously this is a glitch but how is it caused, is it being done by the previous owners of the car or is it just a glitch with forza
This is the only car like this that I’ve seen from the auction house

Most of the cars that are sold in the auction house comes from modded accounts where the cars were edited into the garage and not “earned” through completing the playlist. For me it seems that this modding would have corrupted the stats of the car.