Unfortunately, "We the People"of Florida do not agree. After having passed by referendum an initiative authorizing, but not funding, a State wide high speed rail system, "We the People" decided that such a system would be costly and not provide much in the way of benefit. Therefore, the People, through their elected Representatives and Chief Executive, repealed by means of enacted legislation, the initiative.
Consideration of any locally funded Florida intrastate service, even conventional Diesel locomotive hauled trains operating at speeds less than 80mph, is constrained by existing State law requiring that any County desiring rail passenger service, must establish a permanent funding base by means of excise taxes, i.e. "Sales Tax' or Motor fuel Tax. I'm not sure if ad valorem taxation, i.e. Real Estate and tangible or intangible Personal Property, can also be used as such, but even if they can be, it still does not upset the requirement of a local-level funding base. As a result initiatives must move forth "County by County'. While it would appear that Tri-Rail patronage could be enhanced by a Northward extension along the FEC to Stuart or even Northwesterly along the Amtrak/SAL route to Indiantown, Martin County has refused to impose any taxes that would qualify for a funding of Tri-Rail. Therefore, Tri-Rail remains constrained to the three original participating counties of Palm Beach, Broward, and Dade. The Central Florida initiative through Orlando, which is "in the works", includes only Orange and Osceola Counties, and is controlled by the same provisions affecting Tri-Rail.
Regarding a Federally funded Florida intrastate initiative, I simply do not foresee such. True, there is Federally funded Amtrak intrastate service with the Empire Corridor, but such is an exception and represents first the overwhelming need for intercity rail passenger service as well as the "clout' that the New York caucus can bring to bear in Wash. It also helps that New York is still, even if not as overwhelmingly as in the recent past, a 'credit State'; they put far more in to the "Feddytrough" than they ever take out.