Tax credit information - state credit w/photovoltaic credit

Aloha,
I am planning to get a Leaf this year. I installed a photovoltaic system 2010 and have a state tax credit that I be rolling over for the next three years (about).

I am wondering if the tax credit from the photovoltaic system has maxed me out or whether I can still take the state tax credit for the Leaf.

If anyone knows anything about this I'd appreciate any information. I can't seem to get a response from the state.

Thanks,

i would find that unusual since a PV is so completely different than a car. but then again, have no real info on Hawaii. is there a limit to the PV credit?