Is it worth importing cars in USA?

I am a Canadian citizen moving on L1 visa into USA. Since our move can be considered permanent is it worth importing the two cars into USA ? (I mean when you consider importing fees/duties etc - I have to ship them also because its far)or I am better off selling them in Canada. Both cars are paid for. Both are Honda 1999 and 2001 respectively. Any thoughts?

Thanks for your input.

There is no duty or other taxes, they're personal effects.