California taxpayers could be on the hook for a staggering $388 million because of a state tax collection agency's vigorous pursuit of a former California taxpayer. In a case that one tax expert called "completely unprecedented," jurors in a Clark County, Nevada District trial awarded Las Vegas inventor Gilbert P. Hyatt $250 million in punitive damages Thursday for the "outrageous conduct" of Franchise Tax Board auditors in an investigation that began in 1993. The award was on top of $138.1 million jurors gave Hyatt last week for "invasion of privacy" and "emotional distress." . . . "As far as I...