I've played Gt3 in simulation, but there is a problem, I had win sunday cup, I won a Trueno, but, when I played the second time, I hadn't won a trueno. How can I win a Trueno?
Please read the FAQ here - and the "Read This: Look Here Before You Ask" thread.
You cannot win a car from a single race series twice. You can only win cars from series races more than once. Sunday Cup is a single race series - you must enter each race separately.
