Toyota's stock is probably undervalued to begin with because of the stupid pedal thing, and this probably makes it extreme. Short-term traders need not apply, though.

You're going to want to look for a company with the least exposure to Japanese demand. You also want to see which company's plants were most disrupted by the crisis. I had the data before, I no longer look at the car industry in Japan but do some research and you'll know. Not sure if this is the time to buy any Japanese equity right now though, it's a flight away from risk and investors are indiscriminate with their funds.

While watching CNBC today I saw a story stating Toyota had to close a few factories and had a lot of damaged inventory.