Board Thread:Game Discussion/@comment-29799506-20170221133751/@comment-27048832-20170221224412

I think the Fandom user is correct the car will sit until McLaren Generations is unlocked

Winning a car doesn't unlock career series to my knowledge, bonus series yes

If it pops up in WTT or OMP then obviously it's available for use, if you don't have the series unlocked and don't have the P1 GTR this is a good chance to obtain the F1 GTR at a lower price (going on it being less than 750 to win LTS)