The DARPA grand challenges have bootstrapped:
1. Self driving cars and got them working as a prototype. [1] 2. A rapid Orbital Launch Program (Still in progress after only one competitor left)[2] 3. A subterranean challenge to map and search underground environments [1] 4. A way to use social networking to find something that is time critical [2] 5. Onion routing which is used in Tor. [3] 6. Cyber Grand Challenge to automate the exploitation and securing network systems [4]
Note that competitors also have open sourced what they have done. [1] https://en.wikipedia.org/wiki/DARPA_Grand_Challenge
[2] https://en.wikipedia.org/wiki/DARPA_Network_Challenge
[3] https://en.wikipedia.org/wiki/Onion_routing https://en.wikipedia.org/wiki/DARPA_Grand_Challenge_(2007) [4] https://www.darpa.mil/program/cyber-grand-challenge