Game with the fellow traveler in the Russian roulette

Many Russians used recent May "vacation" for travel. Those who is more wealthy, bought plane tickets or on the train. The people went closer more simply, often using for movements modern services for search of fellow travelers. It is favorable — the trip on the same BlaBlaCar on the average manages twice cheaper, than in the regular bus. Here only for safety passengers anybody cannot be charged... Why the person risks to entrust the destiny to the stranger (probably, not quite adequate) and how to avoid possible troubles? Let's try to understand. Somehow we with...