Texas is so big vast and has no everglades or Miami lawyers to bog down the situation high speed may be a possibility there, never in Fla. Much of Fla. is barely 100 miles wide.
If the lawyers didn’t kill it the enviros would. Besides everyone uses cars down here. Some never leave their auto.
Sounds like a cheap way to live. You could start out small...like VW bus, and work your way up...to a Greyhound.