Talk:Open Sky Challenge/@comment-26473409-20150607100141

I have both the Ariel Atom 3.5 and the Caterham Seven 620, they are both max upgraded with R$ only, no gold, and it is near impossible to earn enough trophies to unlock the next level. I just need 1 more trophy to get through but I really don't want to spend valuable gold on upgrading the cars, and certainly not wasting 150 or 100 on the other two cars, they look terrible. So frustrating.