Online car rental services are becoming increasingly popular online.
So internet users who have a travel voucher, but do not want to travel outside the city, can use the voucher for hiring a cab within the city.
Some of the car rental services are using electric cars for travel within the city, since it is cheapers.
The drivers are also having a GPS based app.
So even if the passenger is not familiar with the area, if he mentions the landmark, the driver will find the place.