If injured due to the negligence of a driver, you may, of course, sue that driver personally. In addition to that, if he or she was driving in the course of his or her employment (e.g. a company truck, as part of the job), then you may sue the company, too, if you like, under the theory of respondeat superior (basically, the superior, or boss, is responsible). You don't have to sue one or the other--you may, and probably should, sue both, to maximize your chance of recovery. You'll need to be able to show negligence, or unreasonable carelessness; you may also need to be able to show (if the other side raises the issue) that you yourself were not negligent or careless, since your own negligence could undercut your recovery. It would be worthwhile for you to consult with a personal injury attorney.