Toto Wolff signs new Mercedes deal - but Lewis Hamilton's boss highlights biggest "risk"
![Toto Wolff signs new Mercedes deal - but Lewis Hamilton's boss highlights biggest](https://i2-prod.mirror.co.uk/incoming/article31882461.ece/ALTERNATES/s615/0_F1-Grand-Prix-of-Abu-Dhabi-Previews.jpg)
Toto Wolff has led the Mercedes F1 team since 2013 and is a co-owner of the company as well as team principal, along with Sir Jim Ratcliffe and the Mercedes motor company