Teams may move to a longer wheelbase in the next royal season as more fuel will be allowed.
In order to allow pilots to attack more over a distance, and not only to save fuel, the limit on fuel use will increase from 105 kg to 110 kg.
The extra fuel should allow riders to abandon the tactic of getting their feet off the accelerator early - something that not only they, but also the fans hated.
However, the possibility of using additional fuel also has disadvantages. If teams want to use the maximum amount of fuel allowed, then they must increase the tank - this means that it will take up valuable space inside the car.
Designers cannot simply make the fuel tank taller, as regulations dictate that fuel must be kept within 400mm of the car's longitudinal axis.
The only solution in this situation is a long fuel tank, but then the teams will either have to squeeze the components behind into a smaller space or simply make the car longer.
Last year there was a big difference between the top teams in terms of wheelbases.
In Red Bull, it was the smallest - 3550 mm, followed by Ferrari - 3621 mm, and Mercedes - 3726 mm.
Mercedes has no desire to make the car longer, as they already made similar changes in 2018. So the Silver Arrows designers are just working to make the rear of the car better.
And even if the team wants to increase the length of the car as a whole, will it still leave the wheelbase unchanged? so she enters the new season with the concept she already knows.
Red Bull and Ferrari still have room to make the car bigger. It is estimated that they will need 7mm for an extra kilogram of fuel, so in general they can increase the car by more than 30mm. Some may even decide to add 50 mm.
Another factor that can play a role - if teams want to increase the wheelbase, then they can completely follow the path of Mercedes and make the cars very long.
Mercedes has long been convinced of the benefits of a larger car - the extra body kit generates more downforce, which offset the disadvantages of more weight and less agility in slow corners.
According to some assumptions, Ferrari will increase the car again this year. This will be the result of lengthening the drivetrain, which will move the engine away from the rear wheels, allowing the rear suspension to be redesigned.
If Ferrari takes this route to meet its weight distribution requirements, it will have to move the front wheels slightly forward.
In turn, this will make room for new ideas in the side pontoon area, where Ferrari has led the peloton in recent years.
Finding additional downforce and overall efficiency has become even more important as the front wings are lighter and the side deflectors lower and longer from 2019.
In addition, some teams may take a completely different approach to fuel - they may ignore the benefits of a higher fuel tank content.
Several times there were situations when the teams did not fully refuel the car, looking for advantages from a lighter car.
Considering that 10kg of fuel takes 0.3 seconds per lap, it can obviously be tempting to not fully refuel the car if this does not affect performance.
This cannot be applied at every race, but will there be a clear advantage from this at individual stages? Or will efficiency be severely affected if additional fuel is not used?
Another factor to consider is that because of the new rules, cars will have more air resistance - so more fuel will have to be burned to get the car up to maximum speed on the straights.
