Yeah I know this is a crazy concept, but if you actually lower the cost of EVs compared to ICE cars for customers, they will actually buy the EVs vs the ICE. So limiting the rebate to lower cost EVs will force manufacture to bring down cost and encourage more EVs. Keep it for the expensive EVs? Well that will just encourage the manufacture to just raise the price by the rebate to extract the most margin and keeping EVs expensive compared to ICE which they are currently.