A California measure would tax the rich to fund electric vehicles. Why is the governor against it?

Proposition 30 would raise up to $5bn annually to help buy zero-emission cars, trucks and buses; Newsom calls it a Trojan horse'

Two years ago, California's governor, Gavin Newsom, issued an executive order banning the sale of new gas-powered vehicles by 2035.

This year, he's opposing a ballot measure to fund the transition to electric vehicles - siding with Republicans and against fellow Democrats, environmental groups, firefighters and labor unions.