Yup, I use those 2 events for grinding credits as well, I've been trying to get the 10M trophy for a while but every time I see a nice car in the UCD I buy it :(, I'm on my way to buy all the group C and LMP cars right now they. I've heard good thing about the Peugeot 908 HDi FAP so that's next on my list.
Damn I really need a wheel as this DS3 is cutting at my GT5 overall enjoyment bar.
^_^