Goodyear.

Goodyear introduced a run-flat tire, dubbed Eagle EMT (extended mobility tire), which engineers designed with the aid of computers to develop reinforcements in the tire sidewalls that enable the tire to carry a vehicle's load, even when running-at zero air pressure. The tire is fitted on standard wheels, costs slightly more than other ultraperformance Eagle tires, and is reported to never go flat, even with no air pressure. The Eagle EMT can travel 200 miles at 55 mph at 0 psi, Goodyear reports.