As of July 1st, families making an average amount of money will get a larger tax rebate on the purchase of new fuel-cell, electric, or plug-in hybrid vehicles. If you are a high earner, your tax rebates are gone though -- sorry.
http://blog.caranddriver.com/californias-tax-rebates-on-evs-phevs-now-based-on-income/
As Damon Lavrinc reports at Jalopnik, the new incentive structure replaces California’s previous tax rebate of $2500 on every electric vehicle sold in the state. In its place, a sliding-scale system has been adopted that takes into account the type of vehicle and the buyer’s annual income. The largest rebates—$6500 for fuel-cell cars, $4000 for EVs, and $3000 for plug-ins—go to individuals or families with an income less than 300 percent of the federal poverty level (FPL). Those who make less than $250,000 individually, or families under $500,000 jointly, get $5000 for FCEVs, the standard $2500 for EVs, and $2500 for plug-ins. The very wealthy—those who make more than $250,000 individually or $500,000 jointly—get a $5000 tax rebate on fuel cells but no rebates on electric or plug-in-hybrid cars.

http://blog.caranddriver.com/californias-tax-rebates-on-evs-phevs-now-based-on-income/