Cohler, while talking hands-free while driving down I-280 in Silicon Valley, gave as an example that he knows where all the speed traps are in the Menlo Park area.
Waze, a startup based in Israel and Silicon Valley, offers a free app with navigation constantly being re-determined with the help of its own 40-million strong community of users.
To bring his idea to life, the Silicon Valley-based designer first created a 3D computer model of the Tardis's interior using the free-to-use open source computer software programme Blender.
Billionaire Silicon Valley tech investor Peter Thiel has funded a Canadian engineer trying to tap the power of tornadoes to generate carbon-free electricity.