Originally Posted by TheFlyingToaster
For the cars I never found it made much of a difference, I'd just always go for the top unlocked car at the time due to it giving more rep per completed challenge. In the events where it gives you choice of classes, just experiment and find out which you like most. For example in land rush I'd always choose buggies over trucks because they are more fun to drive imo.
Okay thanks again for your tips and advice.I'm also on the easiest difficulty and still too hard even if I'm using a wrong car that has is hard to handle.