The National Highway Traffic Safety Administration (NHTSA) is seeking to identify qualified small businesses capable of providing technical support to prepare an Environmental Impact Statement for its medium- and heavy-duty vehicle fuel efficiency program. This is a sources-sought notice for market research; it is not a solicitation for bids, and the government does not intend to award a contract based on responses. Interested qualified small businesses must submit a Corporate Capability Statement, demonstrating relevant experience, to the identified NHTSA point of contact. The performance location is specified as the Department of Transportation headquarters in Washington, D.C. No specific budget or project timelines are detailed in this notice.