I can understand where you are coming from with relation to the current low acceptance/uptake of XEM, but I also believe that NEM approach is going to be quite effective in making XEM as acceptable as possible.
Like anything new, I think it generally has slow uptake, but given that there is organisations already allowing real world use payments for XEM (eg. TravelByBit) and other startups, things will change.
With relation to getting drivers to accept NEM as opposed to fiat, we are cutting fees for drivers who accept XEM as payment as opposed to fiat. By increasing this incentive, we are hopefully going to have users accept the currency more often. Once we do this, we can then partner with entities also accept XEM and allow partnership agreements with them (example Mobi users may get discount on a car wash that accepts XEM).