Quay Valley, California
In March 2015, Dirk Ahlborn, the CEO of Hyperloop Transportation Technologies (HTT) in El Segundo, California announced a plan to build a hyperloop test system at the Quay Valley site. Ahlborn indicated that construction could begin in 2016 to be completed in 2017 with the first rides to begin in 2018 if his company can raise $100 million in funding. The company has said that this track will be a fully working and operational creation of the hyperloop, but that running speed will be reduced on the shortened track from Hyperloop's full potential. It is not decided whether a 5-mile loop or straight section will be constructed, and it may cross the Interstate bisecting the site. Ahlborn said that speeds up to may be possible. Quay Hays expects to break ground on the new community in 2016, including a working version of the Hyperloop, estimated to cost $100–150 million.
Elizabeth River Tunnels Project
In June 2004, the Hampton Roads Planning District Commission wanted to add the parallel Midtown Tunnel and the extension of the Martin Luther King Freeway (along with several other congestion-relieving projects) to the 2026 Regional Transportation Plan (RTP). The construction cost was estimated at $686 million. However, the Commission removed the project from the RTP after concluding that state funding would be insufficient, and because VDOT determined that "reliance on a regional gas tax [was] not a reasonably foreseeable source of revenue" for the plan.