At the start line you are given 5000 MJ (~ equal to 100kgs/125 litres of fuel) to cover the race distance.
Do so as fast as you can. First to the chequered flag wins.
The energy can be stored as chemical energy (be that petrol/hydrogen/charged acids etc) or kinetic energy (flywheels etc) or whatever.
You can do whatever you need to do to use that 5000 MJ most efficiently.
Immediately, car manufacturers can look at F1 as a real, applicable "pure" R&D exersize as well as an advertising one.
(Note that the 5000 MJ starting point can be reduced as needs be to keep overall car speeds down - you could go for a draconian 2500 MJ to start with!)