These are closed cockpit, purpose-built vehicles that have normally aspirated engines up to 5.5 liters.
It's also smaller and lighter than Honda's regular two litre engine, and at 237 bhp sets a new record for highest specific output for a normally aspirated production car engine.
The normally aspirated engines are mated to a new generation of Volvo's 5-speed manual gearbox.
These engines are all normally aspirated, meaning that a turbo or supercharger can be installed for added power.
That's faster than a normally aspirated Porsche 911.