The automaker trades for a ridiculously cheap valuation even though it has massive potential.General Motors (GM 0.63%) is often overlooked by investors in favor of pure-play electric vehicle stocks. But I would argue that not only is General Motors a cheap stock right now, but it could be the most underrated way to invest in both electric and autonomous vehicles in the entire market. Here are just three of many reasons why General Motors is one of the largest stock positions in my own portfolio, and why I p ...