First restiction is that you need a certain car to do the actual event .... if people dont have the money then they cant get the cars (challenge)
No one says you have to tune it up so do it as a stock car (challenge)
Getting the money to tune it up to make it easy (challenge)
What you moaning about? just play the game :/
Two of your so-called challenges there rely solely on making money, which in this game is nothing but a grind. In what reality is setting your bob loose and doing something else a challenge? Seriously pal, if you could answer that intelligently, I'd send you money.
You know what else? I have ever right to complain, because I am a dissatisfied consumer. This game was not worth the price it was sold at, and I think I'm going to be done with it until they fix it. Mass Effect 2 sounds like a lot more fun right now.