A proposed high-speed passenger train between Las Vegas and Southern California got another boost on Tuesday with Biden administration approval to issue $2.5 billion in tax-exempt bonds for the $12 billion project. The announcement benefiting the Brightline West project followed a $3 billion U.S. Department of Transportation grant in December and government authorization in 2020 for the company to sell $1 billion in similar bonds. ... The 218-mile (351-kilometer) Brightline West project aims to whisk passengers at 186 mph (300 kph) or more in electric trains on new tracks along the Interstate 15 corridor ... No date has been announced...