Turbo engines will never make a comeback while the FIA are looking at reducing costs, the amount of additional stress created by a high revving forced induction engine increases the cost of an engine. We have seen evidence of the FIA considering things such as a single 'manufacturer badged engine' along with engines lasting multiple races and nothing to suggest that turbos are being considered once again, that era has passed along with launch control.

I doubt F1 will ever use meth as a fuel for the simple reasons of safety and since methanol vapour is heavier than air, it will linger close to the ground or in a pit and if the concentration of methanol is above 6.7% in air it can be lit by a spark, Once ablaze, the flames give out very little light making it very hard to see the fire or even estimate its size, especially in bright daylight.

The future focus on forumula 1 will be renewable energy sources, such as KERS. The FIA have already stated that they plan to expand the amount of recovered energy the car is permitted to store from such a device for later use, in effect looking towards a dual fuel F1 car