The satisfaction of owning one of the only 20 in production? Being able to admire its beauty in the garage/driveway? Putting it on a trailer and bringing it to the track, in neighbouring Malyaysia? Quite a number of different reasons, but it's most probably a prestige thing. Also, Singapore's first permanent racetrack is opening in a couple of years' time, so they'll probably have a go on that, but if they don't get the car now, they may not be able to do so in future...
And yea, Singapore does suck really really badly when it comes to car ownership. Not only are cars so stupidly expensive, but there are SO many things we're not allowed to do. We can't modify them beyond a set of VERY strict, and limited guidelines, we can't drive left-hookers on the road, we're even actively discouraged from driving a diesel car, by way of astronomical taxes which make them prohibitively expensive to buy. Plus, road tax is calculated based on engine capacity, which is why you only ever see the very smallest-engined versions of various cars. We also have another different tax called the Certificate of Entitlement (COE - helps regulate the number of cars coming onto the roads), which expires after 10 years, unless it is renewed at the end of that period, so you very rarely see any older cars anymore, so while it means the 2nd-hand market is full of relatively fresh metal, it also means that new drivers (and/or their parents) have to fork out a huge amount of money if they want a car, due to lack of any cheap bangers anywhere. Plus, most of the older cars that you can find are really cruddy, boring Japanese saloons or hatchbacks, and even then the cheapest one from the early '90s (think Toyota Starlet or Suzuki Swift) still cost a minimum of S$6000... I could go on and on, but then everyone would just fall asleep. Now you know why Mark and I want to go someplace else, like Britain, the States or maybe eveb Dubai, where car ownership is much easier? :(