Wednesday 11 January at 06:35 : Jan.11 (GMM) Sebastian Vettel has defended his habit of regularly changing his F1 helmet livery.

The back to back world champion uses several designs in a single season, which according to Germany's Auto Motor und Sport is a "bit disappointing" in the eyes of some spectators.

"Is it (your livery) not your business card, something special?" the magazine asked Vettel in an exclusive interview.

Vettel answered: "Some things on my helmet always stay the same.

"But somehow it just happened that my helmet designer and I experiment and have fun with it. Together, we usually have pretty good ideas.

"I do find some helmets incredibly beautiful," the 24-year-old German conceded. "Like Senna's. Or the bars on Damon Hill's black helmet.

"Or the Scottish cross on David Coulthard's. Very simple but unmistakable," he added.

He may be setting a new trend in one way, but on the other hand he has so far resisted joining the new age of Facebook and Twitter.

"For me, this is not real communication. It's not my thing," Vettel insisted.

"I find it a very indirect and impersonal way to communicate with other people."