The recent problems at Toyota, combined with the collapse of the stock, which is now off 19% from its January high, have erstwhile bargain-hunters asking if the stock is a good buy here. I think not, and here’s why. Toyota (the company) enjoyed a great long uptrend in its fortunes, thanks to its ability to design and build high-quality cars that were affordable. People grew to trust Toyota more than any other car company on earth. And over the same period, the company’s stock (symbol TM) enjoyed similar growth. Part of the stock’s growth was absolutely reasonable, reflecting the...