Made it to Level 40 on my other profile, since Xmas 2010, what a drive! Only ground for a couple million points, used the FF430 seasonal and a 330 pp Suzuki Swift at Autumn Ring, worth about 150,000 xp even finishing 7th the last couple of months. So that is the "excellent driver" trophy and allows you to buy the x2010 in multi colours. 97% complete the game. Never did win that Daytona Nascar race or the Formula GT Aspec series or the Vettel Challenge. My Polsixe profile still many xp to go.
Some personal stats:
58,773,372 XP two profiles
134,350 kilometres
1254 wins
1052 days
437.5 XP per km
107.2 km per win
46869 XP per win
55868 XP per day
127.7 km per day
1541 cars
1.46 cars per day