The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage. The opinions expressed are those of the author and do not represent the views of TheStreet or its management.NEW YORK ( Trefis) -- General Motors ( GM) is currently the world's second largest automobile original equipment manufacturer based on vehicle sales volume. GM sells cars, trucks and crossover vehicles, and offers vehicle leases and loans through GM Financial. Its business is diversified across products and geographic markets, with operations and sales in more than 120 countries. In China, GM operates primarily through its three joint ventures. General Motors competes with players like Toyota ( TM), Honda ( HMC), Ford ( F), Daimler, Volkswagen and Hyundai. We recently launched coverage of the company with a Trefis price estimate of $45 for GM's stock, which is about 25% above the current market price of $36.