This si very new concept for giving car on rent for day or for vacations . I personally liked there offer and sceme but this will not work for sure as people rather will hire taxi then taking there cars . But yes this is good option for kids who are young and want to take there friends or someone special for a ride to show off.
I personally have not used there service but have not seen much of cars on the road from there as well .
I wish them success though for future .