It can be a good way to get around in Cuba by renting a car. The Scuba Diving in Cuba is worth checking out if you are visiting the country but this author believes that there is better scuba diving if you just want pure diving to be had in the Caribbean. Well if you go to Cuba then renting a car could be a good way to get around, backpacking on a bus proved fine when I was there, but I have to admit that there were some spots better reached by car. Still you can always hire cabs or collectivos as they are called!
Casa de particular
When you get to your cuba destination why not check out a casa particular? Its really a good way to get into cuba very safe and regulated and very homely. A perfect example of Cuba and her originality!