Former World Champion Nico Rosberg says that he is 'loving' the proposed new concept cars for the 2021 season of Formula 1. The future of Formula 1, and how the future of the sport will look, has been the topic of much debate this week after a series of potential concept cars for the 2021 season were released online. Formula 1 chiefs have said that they are keen to bring back 'style and substance' to the sport, amid concerns that the sport is losing its aesthetic and exciting appeal. This concern has only been heightened by the growing success of Formula E, the electronic only variant of F1 that was launched in September 2014, and has since witnessed phenomenal growth. Despite these concerns, the new designs for what the F1 cars of the future might look like have been a huge hit with many fans, and Rosberg has now also thrown his backing behind the new-look cars.In a tweet on his personal Twitter account, Rosberg stated that he was 'just loving the new 2021 concept F1 cars!' before asking fans what they thought, and calling out the excellent work of the designer behind the image. Rosberg retired from F1 in December of 2016, just five days after he won his only World Championship in the sport - snatching the title away from Lewis Hamilton on the final day, after a bitter season-long rivalry with his teammate. Since then, however, Rosberg has remained a popular and influential figure within the sport, working both as a pundit and an advisor for Sky Sports F1 team, as well as also working as an ambassador for his old Mercedes team. 

One part of the new designs that has also sparked some discussion is the increased prominence and integration of the Halo-design within the new cars. 

Although an unpopular addition with many at first, the so called 'Halo' structure on the current F1 cars received a fresh and very strong wave of backing after a shocking crash involving Fernando Alonso and Charles Leclerc this season. 

After Alonso was shunted from behind at the start of the Belgian Grand Prix, his McLaren was sent airborne and over the top of Leclerc's Sauber, with much of the weight of the car landing on the driver's cockpit.

After images then surfaced post-race of the tyre and chassis marks down the front of the talented Monegasque drivers car, many were quick to point out that, were it not for the Halo, Leclerc might have suffered serious injuries, or even worse.