Do they have Grabcar? Is it safe? How much cheaper in general? Grabcar or Grabtaxi recommended? How about Uber? Thanks.
they do have GrabCar and Uber in VN
safety? -> I guess just like Spore, it may still be unsafe, there's a possibility, but generally it's safe, at least most of the times, you just make your own judgment whether to go or not...
cheaper? -> GrabCar and Uber are supposedly cheaper than normal taxis, but things can change
for GrabCar, you can see the price before you book (if you like the price, then you book)
for Uber, you can see an "estimated" price as it would also depend on the actual distance + time travelled, there may also be "surge pricing" when in high demand (e.g. rain)
for GrabTaxi, it's just normal taxi, usually Mai Linh Taxi but maybe can see other brands as well (but never Vinasun which is "at war" with GrabTaxi) -> for me, I don't see any benefits in using GrabTaxi, as you can easily flag a Vinasun or Mai Linh on the street, so why need GrabTaxi anyway?
(unlike in Spore where it's much harder to flag a taxi like that)