You can put money on your account in taxi «Bond».
Thus you wouldn't need to pay by cash in the car.
Put money by credit card:

Put money in street terminals of the «City 24»:
In the terminals menu you need to find Taxi icon and then the icon of «Taxi Bond» and provide
your phone number. You must order taxi only from this phone number.
In the terminals menu you need to find Taxi icon and then the icon of «Taxi Bond» and provide
your phone number. You must order taxi only from this phone number.
