It is not possible to drive from Miami to Cuba.
It is 3,117.99 miles with an estimated driving time of 46 hours and 11 minutes according to MapQuest.
About 11 hours with a little bit of traffic
if you drive out from Sacramento at 5am you will be at Seattle around 3 to 4am the next day
depending on traffic, it is about 90 min - 2 hour drive from Sacramento to Oakland
4 hours
at what speed?
a long time
You cannot drive from Miami to Haiti. Miami is on the mainland of Florida. Haiti is on the island of Hispaniola in the Caribbean. Some form of air or water transportation is necessary.
That would depend on where you start. For me in Sacramento, CA, about 5 days.
Without traffic it would take roughly 35 hours.
A few days