My friends (who I just joined in Mexico) are driving from Washington DC to Argentina at a much more leisurely pace. Gas is a HUGE expense.

But you can do it...they have been blogging about the trip www.capitolsouthbound.com

They are on the island now and left their car in Corozal with Mr. Menzies Transfer service (It costs $5usd a day to store it at his secure camp area). They took the Thunderbolt boat over to the island.

Good luck!