Ubber Pool: an collaborative economy model

People try being to survive in economic crisis, that is not only a Brazilian problem, but a world problem.
Brazilian people create new business models to help each other and consequently, they are making new forms to gain money.
Everything is permitted! A basic free-rider can be a solution to distribute income. Ubber service, that is a service created by United States, is increasing its participation in Brazil and the Brazilian people have thought about how it can be more profitable at all: Ubber pool, service created by São Paulo, Brazil.
An user can ask a Ubber service and can share the trip with another unknow people that be going to the same place. The trip can be later but the driver gain more money and the users pay less. The trip receive 40% of discount!
There are advantages and disadvantages: it´s possible to pay less because the value is foreseen in the act of the contact of the service but it´s not safe because despite of these advantages, the user doesn´t know it "friend", the free-rider. Another problem could be the time of waiting. Ubber Pool also reduce the number of cars in the streets, the biggest problem in São Paulo, in any hour of the day.
This service is increasing in São Paulo and it has all the possibilities to spread to all states of Brazil.
This is a manner to surf on crisis.