Americans do forget along ewith Fix it again Tony we have Ford Found on road dead or fix or repair daily. Ford had the exploding Pinto, Chevy had the unreliable Vega and the hidious Aztec, Toyota just recently had the surprise 0-60 cars as well as surpise my brakes don't work cars. Yet all of these car companies continue to be in business. Granted the old dealership model of requiring purchasing a dealership and setting up an exclusive lot would hurt them but if they approached existing dealers of other cars and said order what you want and sell them with the requirement of having trained mechanics for their car and honoring warranty work I bet they could beat the number of dealerships they had under GM who basically bought controlling interest to stifle competition and were no help.
GM killed the American Isuzu market