The code being removed in the patch tries to fast forward a peep into the ride when it is the second peep for a vehicle that is used in pairs. Problem is that funds checking does not happen, so it happens that a peep may pay against its will.
Lets say a rich peep enters in line and a poor peep enters in line right after.
If the price of the ride is such that the rich peep can pay and the poor peep can't, it will be dragged into the ride because funds checking only happened for the first.
The second part of the patch just adjusts we consider the vehicle a full car if the second position is filled.
Add test to verify that a peep is not dragged into a ride it can't pay
This test puts two peeps in a Ferris Wheel. The first peep is rich and the second peep is poor. When they are both in line, the ride price is raised so that the poor peep can't pay.
Make sure the poor peep turns back and leaves the ride.
During development, a mistake in the logic would have broken all rides other than ferris wheels in a way that multiple guests could enter the same car.
Also add a test to make sure that is never broken.
