The 1962 Ford Seattle-ite XXI, designed by Alex Tremulis for the Seattle World’s Fair, was a highly visionary concept car. It featured a unique six-wheel layout, with four steerable front wheels, intended to enhance tracking and braking efficiency. The vehicle’s modular design allowed the front power capsule to be easily interchangeable, accommodating projected power sources like fuel cells or compact nuclear devices. Advanced interior concepts included fingertip steering and a travel programming computer with a central viewing screen that displayed an automatically rolling road map and estimated arrival time, anticipating modern GPS and digital dashboards.