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Spirit of America Sonic I, a jet car that broke speed records, goes up for auction for $997,000
The Spirit of America Sonic I, a groundbreaking vehicle ... In 1963, the vehicle surpassed 650 km/h during tests at the Bonneville Salt Flats, but was quickly surpassed by other prototypes.
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Photos: Bonneville Salt Flats speed records
Here's a photo tour of Utah's famous salt flats, with the vehicles and ... via Getty Images Craig Breedlove with his "Spirit ...