Goodyear is developing a new concept it calls Air Maintenance Technology that could all but eliminate the need for spare tires on any vehicle. AMT uses a miniaturized pump contained within the tire itself to maintain the optimal pressure. The system would effectively overcome all but a major leak or blow-out. Drivers using run-flat tires must eventually find a garage or other source for a repair or replacement tire. That need would be eliminated almost entirely with Goodyear’s AMT. Tires could stay inflated under normal conditions, making it unnecessary for motorists to check their tires.