I've visited Singapore every couple of years for the last 20 years or so, and have to say that on my last visit, I thought their driving was improving. Possibly put that down to the fact that now that I drive myself, maybe the bad driving tactics don't scare me as much as they did when I was a kid
Parking in Australia is expensive; or, at least, I think so....can't say I noticed the price of parking in Singapore, so can't really compare.