The return of Kimi Raikkonen is great for the sport, he only left because Ferrari wanted Alonso and couldn't find a competitive drive elsewhere. After 2 years failing as a rally driver, at 31 he is still young enough to make an impression on the sport.
Pre season testing is notorious for showing very little about who is on top and who is struggling for form, although listening to the drivers and teams throughout testing gives us an idea of what is to come. What many believe is that the teams are much closer than previous seasons.
Red Bull are still the team to beat, they have had the fastest car since 2009 and have simply evolved the car rather than have to start afresh.
Mclaren are hot on their toes, and with arguably the best driver pairing, along with the ability to update their car dramatically through the season they are sure to be in the hunt.
Mercedes have taken great steps forward in the winter, and if they can produce a race winning car the battle between Schumi and Rosberg will be worth watching.
Ferrari though have struggled to understand their radicle new car, so may be playing catch up throughout the season. Behind the scenes they will be working hard to put it right, with changes in management at Ferrari they will not accept another unsuccessful year.
The best of the rest seems to be team lotus (formally Renault), but with headline signing Kimi Raikonnen, have they just been trying to make headlines with quick times, without testing reliability and other aspects, only time will tell. After all they lost time in testing because of problems with the chassis.
Williams will be hoping to bounce back from a disastrous 2011, and caterham (formally lotus) will be looking at moving up the grid. Unfortunately for HRT and Marussia (formally Virgin) though, nothing they have said or done suggests they will be any closer to rest of the pack this season.
So with 20 races from Australia to Brazil on 25 November, and 500 points up for grabs, the chase is on to become the best driver in the world.