The chicken and egg adoption/price reductions of Thunderbolt haven’t yet made the devices accessible to most storage shoppers. That didn’t stop Thunderbolt’s inventor, Intel from Frankenstein-ing an otherworldly thumb drive with a Thunderbolt interface and 128GB of fast storage.
Internally, the drive has SanDisk SSD (why not Intel’s own?) storage and probably has a bottleneck giving the device somewhere between SATA 3 and 10GB/s Thunderbolt speeds. Intel is making a few for demo purposes and but doesn’t expect a consumer version until wider Thunderbolt adoption takes place and prices for the tech go way down.