The 2012 edition of the challenge was to envision the future of highway patrol in the year 2025. The goal was to conceptualize a vehicle that would account for the needs of "dynamic urban environments." In addition to Subaru's participation in the contest BMW, General Motors, Honda and Mercedes-Benz, all took part in the challenge.
The SHARC is essentially a law enforcement land-drone. It is entirely automated and runs on renewable energy. Subaru envisioned a future where the Hawaiian Islands are connected to each other by a large highway system. Such an expansive area would require considerable manpower to patrol. The concept of an autonomous patrol vehicle would eliminate the need for a good number of full-time personnel.