Let's not overreact! From what I've read, Mitsubishi has sold 68 i-MiEV's since the production change that is thought to be responsible for the apparent battery pack defect. This is out of 33,000 i-MiEV's produced. And the i-MiEV's with potentially defective battery packs were recently manufactured, so none of them would likely have been imported to the U.S. where there are only 2012 models.
Mitsubishi's new plug-in hybrid SUV seems to have been the recipient of almost all of these potentially defective battery packs.
Mitsubishi seems to doing the right thing by halting the production of i-MiEV's while its investigation proceeds.
Honolulu: 2014 BMW i3 BEV (formerly 2012 i-MiEV SE)
Uppsala, Sweden: 2000 Honda Insight