Rewards: 79 Gold, R$79,000
Location: SEASON 1
Unlocks from: Own Any Car in the Series
Maximum Required PR: 98.4

There are 51 events - 48 Trophy + 3 TT – with each car having a specific TT and 2-event showcase, and only the Jesko can be upgraded enough to open the last 3 cup races (PR96.2/97.3/98.4).

Progress Rewards split:
25% - 10GC and R$10,000   [PR 81.5 using Agera R, PR 84.2 otherwise]
50% - 15GC and R$15,000   [PR 86.1 using Agera R or RS, PR 90.2 for Jesko]
75% - 21GC and R$21,000   [PR 93.1]
100% - 33GC and R$33,000  
 
A fully-upped Agera R can reach 64% (I think, since mine isn’t!), a fully-upped RS 82%, both together 88%.