When I ask a friend if they would like to come flying, i first ask where they would like to fly. Then I explain how much the plane costs and that i will pay an equal or slightly higher proportion of the cost. My friends all know how much work and money I have put into this, and the majority have no problem at all in paying an equal share, just like me when I flew for the first time all those years ago.
I dont have any friends with ferraris unfortunately. But if a friend hired one, i certainly wouldnt have a problem in contributing to the cost for a spin in it.