Ok, some of the basics...
Car is Boxster with service time 3 hours
Level 1 upgrades all R$ (total 269,800) take 30 minutes
Level 2 R$ upgrades (Engine and Brakes, total 115,200) take 1hour 15minutes,  remainder total 79GC
Level 3 R$ upgrades look like they will take 3hours 20minutes

3 sections today, 5GC to skip each, reward at end of day R$0 and 5GC

1. Win with average speed 78mph - 2 laps Leipzig Long...managed 90mph no upgrades   $7,350 fame 1400

2a. Autocross Suzuka East - target 35.737s...managed 30.4s no upgrades   $2,150 fame 400
2b. Speed Snap Nurburgring Mullenthingy - target 112mph...managed 113mph no upgrades    $1,350 fame 300
2c. Hunter Leipzig Short - target +88yd...managed +300yd no upgrades   $2,250 fame 400

3. Lap an Opponent and Win Hockenheim Long (Night) 4 laps...caught up near end of lap4, passed half a dozen with all level 1 upgrades  $15,850 fame 2,900     [edit] full 22 car grid