Will changes at Williams result in success?It's all change at Williams this year — but after a disastrous 2011 in which they posted their worst-ever championship finish will those changes be enough for them to make a quick comeback?

The team's ninth-place finish in the constructors' championship last year, with just five points, was the low point so far in a now long-running downwards spiral for the former world champions.

The form of 2003, when they were a championship runners-up with the might of BMW heavily supporting their campaign, are long gone and their name is now only mentioned alongside the likes of McLaren and Ferrari in the

The Sauber challenger again flatters to deceiveThis is the second successive season that Sauber have set table-topping testing times — but with that likely to have been a glory run again, it looks set to be another season of hard graft for the Swiss minnows.

Last year's Sauber looked like a dark horse when it fired to the top of the testing times but in Australia it soon became clear that this was a low-fuel run to put their name in the headlines rather than a genuine demonstration of their actual potential.

This year, the team has had similar testing success and once again it is highly likely the outcome in Australia will follow the

After finishing four points short of fifth last year, Force India have a tough target to beat this season — and even some of the team's top bosses admit it will need to dig deep to step up.

This is the fifth year the team that began life as Jordan Grand Prix has run as Force India and after a tough time in the early days they have been improving steadily in the last three seasons.

In 2009, the team had a car that was very strong on fast tracks, allowing them to take pole position and finish second at Spa. In 2010, they found consistency in the slower tracks too, and finished seventh in the

After two building years, this is the season that Caterham (previously Lotus) must finally attach themselves to the back of the midfield pack — but the chances of doing so are still under review.

The first car out the box this season, Caterham's new car launch was clearly trying to make the point that the team are more organised, more professional and more ambitious about their campaign than ever before.

They talked it up last year, however, and fall well short of Mike Gascoyne's ambitious aims of leading the midfield come season end.

So is there anything to suggest this time will be a

Sauber hit the top of the timesheets last week in Barcelona but nobody really believes they will be front-runners when the real racing begins - so is there really anything we can read into testing outcomes?

In the eight days of pre-season running so far, six different teams have finished at the top of the times — Red Bull, Ferrari, Renault, Force India, Williams and Sauber.

In reality, times mean little in this period because, in the same way as Grand Prix practice sessions often see unusual table toppers as teams concentrate on different programmes, testing sees the same situation but with

Ferrari have been criticised for their new noseThe new Ferrari appears the most innovative car unveiled this year — but while comments at the first test suggested troubled times for the Italian giants is there a reason to believe they can make it a success?

The aggressive looking high nose, shapely scooped sidepods, angled exhausts and unique all-pullrod suspension — the first in F1 since Minardi ran a similar layout 11 years ago — all combine to create a Ferrari that pushes the boundaries in many areas.

On launch, chief designer Nikolas Tombazis insisted: "One thing we can't be accused of is being too tame with the car."

But that comment

Ferrari have been criticised for their new nose

The launch of most of this year's F1 cars last week showed there is a lot of development still to come before Melbourne — but where are the key areas of interest and what can we expect next?

The new crop of F1 cars look eye-catchingly different this year, with ugly stepped noses on all but the McLaren and unpleasant-looking bulges on the sidepods on several of the top contenders.

The new regulations, which had been played down as evolutionary, seem far from it, with the two main areas of development in the nose and the rear of the sidepods — and it's exciting to see a range of different