Why not cram your family of 5 into one of the fastest and potentially most dangerous two seaters on the planet.
Anyone that has ever been to India will know that one of the first experiences of culture shock will hit you when you see the average family sedan, which basically consists of of a family of four or even five on nothing more than a barely street legal dirt bike. In Saudi Arabia the average family has far greater means but perhaps the concept stay the same. I wouldn't know for sure, I've never been.
But this video of a well to do Saudi man cramming his wife and three kids into a two seat rocket that in general goes 0-60 in 3 seconds and tops out at over 200 mph, doesn't seem to be worried about the alarming lack of seat belts or seats for that matter.