Ross in today's episode (contains spoilers from ITVX)

I know it was recently revealed in spoilers that Ross would spark suspicion over his flashy car, and these scenes featured in Monday's episode now on ITVX. Obviously it's to set the scene of Mack and whoever accusing Ross of stealing from the farm but could there actually be more to it?

How does Ross suddenly have loads of money? Sorry if I've missed something and it's already been revealed onscreen but what has Ross done to get his hands on enough money for the new car and whatever else?