SusanGrace, if you will be driving a rental, check all four tires and make sure that you have a decent spare tire as well as a jack in the car.
It can be pretty common if you stop some place and leave your car unattended for someone to let the air out of the tires or poke a large nail right through, and then of course, for a little bit of money, they will change your tire.
Just pull over if you end up with a bunch of speeders behind you, let them go by and then continue on. Driving can be really really stressful - I used to drive all over JA and just can't cope with the tension of it all anymore. But there is nothing nicer than having your own vehicle in JA for sure! You can go where you want, when you want.
Someone recently on this board, I think in reference to Medi, made a comment to her about why she wanted to stay so far in the west end where she would have to take route taxi's "to get to the heart of where all the action is" or something like that. .. & I thought to myself "why would ANYONE want to stay 'in the heart of things' ??? I think the person mentioned right in the middle of 'all the action'... And I wondered why anyone would actually WANT to be 24/7 where 'all the action is????'