[madsbuch]

> But, how is that "better", if you want to invest in a company?

This is exactly out of the scope of the article. So if the question is what you should invest in this is probably not a good metric.

The question the article answers is how to most efficiently finance your own company. It would seem like Tesla has financed selling its own stock, indicating that they think they are overvalued, where Toyota has financed selling their own bonds, indicating that they think they are undervalued.

If you trust their own assessments and want a good deal, then you should probably invest in Toyota over Tesla.