-Buy the Lamborghini Gallardo as soon as you can, then upgrade all of its performance upgrades. It will almost be full. Try to get the handling better than the speed or there will be no effect. You should win all events and defeat the Bosses with ease.
-Get the Audi TT as soon as possible and tune it up as much as possible to have everything be almost full. Then, buy the Gallardo as soon as possible and tune it up as much as possible to have one of the fastest cars available.