Based on Craig Breedlove's Spirit of America Sonic Arrow the Fossett LSR was developed by a team of aviation experts. It has never run so its true potential is unknown but realistic projections put its peak speed at between 850 and 900mph. As Spirit of America it crashed whilst still accelerating at 700mph, the steering problem that caused that crash has been fixed. The car is currently for sale with a price tag of just $3m.