Except, the other sandwich costs 5 dollars, and as far as we can tell, will cause our cars to make the same amount more money as the 50 dollar sandwich, so we need at least some kind of value proposition between the two sandwiches if we are to favor the 50 dollar one. (It's actually quite fun to be reasoning about this at ~2 cuils of overextended analogy.)
I assume that is what the free trial is for. Which would be analogous to getting one free $50 sandwich to test out. Granted, there is the cost of switching from feeding your car a $5 sandwich to feeding it a $50 one considering the sandwich-to-gas converter has to learn how to eat each sandwich. (Is there a word for discussing a point using absurd analogies?)
