Hello Asia Biker. Ironic. I have contacted some Aussie bike forum members about Singapore/ Celebes. Had not recalled any Singapore members here. Welcome.
We too are going to Singapore, July 3 and will stay in that area about a week. Our nephew lives in Singapore, near an area called Pepys Hill Condos. They used to live in Barcelona and now Singapore. Kelvin says driving is impossible and does many errands on a Mountain bike/ or Mass transit. Left his car in Barcelona.
So what is the biking potential like in everyday Singapore. Most used to commute? Can taking a spin about the island for exercise practical? Ever been to Celebes? We are going there to dive. Maybe there- a bike would be ideal. Less urban.