I am compiling a Top 10 list of hotspots:
Heres my :
1) Zouk (weekday nites & major events)
2) Millienia Walk ( incl. Ritz Calton )
3) Orchard Road
a) Mandarin Hotel
b) Grand Hyatt
c) Goodwood Park Hotel
d) Hilton International
e) Takashimaya taxi stand
f) Wheelock place carpark
4) Holland Road (Holland Village, Chip Bee Gardens, Botanical Gdn ,
Dempsey Road & Sixth ave)
5) Tanjong Rhu & Mountbatten, Upper East Coast (Siglap)
6) SICC , RSYC & others
7) Shenton Way (evening peak hour)
Leng Kee Road
& outside Hong Seh, Eurosports, Stugartt ,
etc
btw autobahn is juz opp newton
9) Newton hawker centre carpark & other various food outlets
across the island (eg. Kallang McDonalds, west mcdonalds, serangoon
gdn, etc)
10) Kallang Carparks (on SMSA racedays)
feel free to addon yours 