Combine it with C.H.I.P. [1] and you have a $14 supercomputer.
The generic CPU could download over the air update (WiFi) and reprogram, take care of user interface etc while the FPGA can do the low-power, high throughput tasks (voice processing, video, image etc).
[1] https://www.kickstarter.com/projects/1598272670/chip-the-wor...