Win the rally lisence then get a good car and win the subaru rally inpreza prototype by winning the stage 5 wet reverse. Win all the other rally races by using the subaru. If you win all of them you will get a super suzuki, sell that for a couple hundred thousand along with the cars you won by winning all the other rally races. Now you need to win the European championship to get the gillet race car (you might have to win it a few times).
Sell that and all the other cars that you got. Now just keep on racing get more licences win the endurance races get some free cars sell them, buy a great car and win some champion ship races get the great cherolt by completing 50% of the game. And the rest
you can do yourself