International License Insurance

Hello,

I also have several questions regarding insurance by international license-

1. I understand that insurance rates on international licenses are relatively high. Is there any way I can mitigate these extra costs (e.g. some document from local authority ascertaining that I have never been involved in accidents or insurance claims)?
2. Can I be insured on my friend's or family's car? Would this generally get me more profitable rates then insurance on a vehicle I purchase?


Thanks in advance,

Tom