0.25 EUR per minute is a very cheap price for such a car. In my country you can rent Toyota Yaris or Auris for such a price.
Suggestion - add some source link to the pictures you use in whitepaper. Otherwise it can be counter as an act of plagiarism.
Anyway good luck with your projects, you really need it. According to tronscan.org transfers, there is almost no interest in NimbleGo...
May you tell us your country and company name of car-sharing?

Real price is 0.4euro per minute if your speed is 60km/h but if your speed is 120 price will be 0.55euro. And in WhitePaper we mention that price will change during first year depends on profit and customer feedback.
Thanks a lot
Feel free to ask us anything 