need to consult /k travel experts

can I use my new Malaysian driving license (the MyKad looking one with dual language) in Australia?

or must I apply for an IDP (International Drivers Permit)?

My sister came  back from Korea and she said must use IDP
my colleague came back from US and he said no problem using current drivers license
so how?

sorry no drillz cos random say i always use the same boing boing boing girl

anyone can recommend a good & cheap car rental from sydney to canberra? i might wanna rent when i go there at the end of this year.
if i have a toddler, do they provide baby car seat? any do's and don't during driving there?

and is it easy to drive there? especially sydney.