The World Endurance Championship will permit road-going hypercars to enter its new top-tier class from 2020/21, following a rule amendment.
WEC and the FIA approved new rules last December which meant new prototype machinery that incorporated styling cues from road cars would make up the new class that replaces LMP1 in 2020.
However major manufacturers including Ferrari, McLaren and Aston Martin, lobbied the two parties to allow the use of extreme concepts based on their road-going cars to enter the class.
This has now been approved and will mean hypercars such as McLaren's Senna and Aston Martin's Valkyrie can go up against prototype machines.
A statement released by the World Motor Sport Council confirmed on Thursday that their would be an "expansion of the 2020 LMP Technical Regulations concept to allow a 'Hypercar' developed from the road cars sold by the manufacturers to enter, while preserving the previously-approved regulatory format.
"This expansion is designed to enable additional manufacturers to enter the championship."
Currently no major manufacturer has committed to WEC's new LMP class, which is why the decision to allow road-going hypercars to be included has been given the go-ahead, as it significantly lowers the cost of entry and the work needed to ready a top-tier programme.