GM trots out 'Vette with 620 horses

There will be only two options available on the ZR1: chrome wheels and a "luxury package" that includes power-adjustable seats and Bluetooth connectivity.

The ZR1 logo will appear on the car's headrests, gauge cluster and on metal sill-plates under the doors.

The cars will be hand-built at GM's Performance Build Center in Wixom, Mich.

Each ZR1 will have a unique vehicle identification number that includes a sequential build number so owners will know exactly where their car falls in the order of production.

The ZR1 will go into production in the summer of 2008. According to media reports, the price will be about $100,000.