If you are visiting Ibiza or Formentera then you may decide to go for a car tour. One great part of Ibiza to explore would be the hilly western part of the island, taking in: Ses Figueretes, Sant Josep, Sant Agusti, Sant Antoni, and Sant Rafel. An important tip that not many people know: the road to Sant Josep suddenly narrows after quite a few of the bends, so always approach the bends slowly. The locals know this, and you should too.
If you start the tour in Ibiza Town, then you need to take Avinguda Macabich on Exit A, and head west past the vacation homes of Ses Figueretes. You will reach a turn off to the airport and you should take the PM802 on your left towards Ses Salines. This will take you to the village of Sant Jordi de ses Salines (it's worth stopping to take a look in the church), and then nine kilometers on from that you will reach Sa Canal. This is the spot to stop and take in the island's best beach: Platja Mitjorn. It's even more beautiful than Mari Formentera. At the end of the beach's western end there is an excellent shaded area which is ideal for picnics - it's rarely crowded as most people don't walk down that far.
After that you should head back towards Ibiza Town, but this time turn towards the airport. You will go past the airport, and past the beach of Es Codolar. It's worth going from here to the fishing port of Sa Caleta as there is a nice sandy cove beneath its red cliffs. After than you will head back to Cala Jondal for a bite to eat: there are plenty of restaurants to choose from, many of which overlook the white sandy beach.