DAVID SHEPARDSON and NICHOLA GROOM 0606President Joe Biden's vast infrastructure plan includes $174 billion to boost the markets for electric vehicles and billions more for renewable power - both provisions aimed at weaning the U.S. off of fossil fuels and combating climate change. The $2 trillion plan, which also seeks to invest in traditional projects like roads and bridges, is a centerpiece of the administration's ambitious agenda to decarbonize the U.S. economy by 2050 and restore the nation's leadership in addressing global warming. It also vows to spend $165 billion on public transit, Amtrak and other rail projects - moves…