No need those thing-lah..no want bring those.. The road tax plate stick on your car will do..going in & out of Singapore is the easiest border crossing not crossing over Thailand where you ned to buy Thai insurance & also filling their temporary car import form.

(BTW, why not you chk the link to the procedure posted on pg1 on the requirement. just bring your car only & stop to apply/buy their touch&go card..just follow the procedure on pg 1 will do.)

the white card is availble freely there..but as u said very troublesome.. Another way which I normally do is to stopby at the last petrol station or even money changer & ask them for a copy..Sometime they ask for money & help you filling this..Not cheap but well they fill up for you..RM2/form.