In 2013, a coupe variant of the DeltaWing was unveiled at the 12 Hours of Sebring race and made its race debut at the 2013 American Le Mans Series round at Austin in September [REF].
The redesign was intended to bring the DeltaWing in line with Le Mans Prototype P1 regulations, and to minimize the chance of the driver's head being hit in the event of an accident [REF].