Getting onto the Autopista del Sol (new toll road) is slightly tricky but after that the drive is easy, paved roads and decent signage. The drive should take you 2 1/2 to 3 hours. Be especially careful of your speed, don't push the speed limit, don't pass on a double solid line and watch for school zones. There is usually traffic police just south of the Tarcoles where the speed drops to 60 (near Carara). Do not leave anything of value inside your vehicle without one person staying w/ the vehicle at all times (and to be on the safe side, this includes the Tarcoles croc bridge too). If you stop for lunch, pick a place where you can park you vehicle next to your table and watch your vehicle (all the doors, not just the back or side). Fiesta Del Mariscos is just past the Tarcoles, on the water and has great food too! You won't see "rest stops" as you might see in the states; however most all restaurants will allow you to use their bathroom even if you are not dining there. (Might be a very small charge for that.) It is not uncommon to come upon a traffic stop (you will be waved to the side of the road). The officer will ask for your drivers license, passport and possibly vehicle paperwork. This is all very normal so don't panic that you've done "something wrong". They are just making sure everyone is following the rules! If you haven't already, familiarize yourself with spanish road signage (ie: ceda means yield). Have a safe and enjoyable trip!