juz look at the amount of speeding tickets tp are giving out, multiply them by 3? 4? times for the ppl who speed but got away, and u'll have a rough gauge of how many speed demons are there, who would love nothing more but for a purpose built track to unleash their fury upon.

i dun think there is a prob with public support, i mean, something as controversial as a "integrated resort" has taken up roots in sg. prob i think, boils down to which brave soul would venture off the trodden trail for a venture with little knowledge of the risks involved and recognize the potential competition from neighbouring established world class circuits like sepang.
political will is another matter, but that is a more complex angle which i would rather not start here.