South Florida’s goal to transform into a car-optional region could receive a sizable boost should the Trump administration’s proposal to invest $1 trillion into America’s infrastructure turn to reality, says a local infrastructure expert.

A direct beneficiary of the capital injection would be Coral Gables-based Florida East Coast Industries, whose passenger rail project Brightline could be enhanced by improved public resources, says attorney Mitch Bierman, a partner with Weiss Serota Helfman…