Board Thread:Game Discussion/@comment-179.219.103.202-20161221142036/@comment-26388545-20161221155151

Of note, you will have to spend 925 gold & R$ 2,505,900 to upgrade the Toyota enough to get to the 10 lap racer. Either that, or you buy another LMP1 and upgrade that one to PR 95 and leave the Toyota with R$ only. My Toyota only has R$ and I can win the 10 lap race evert time. The Porsche costs only 258 Gold & R$ 269,000 to get to PR 95. A Porsche sale is actually way more helpful to unlocking the 10 lap race.

For the next 8 hours, the Audi is the cheapest way to get there (if you have a pile of R$). It's usually 855 Gold & R$ 2,331,100 to get it to PR 95. Right now it's 642 gold & R$ 1,748,250 in upgrades. Of course, you need another R$ 3,000,000 to buy it. You can earn back that $R fast once you unlock the 10 lap race

I really regretted not buying the gold upgrades for the Toyota on the last sale, looks like I'll get another chance.