 Embark Trucks Inc., a maker of self-driving technology for the trucking industry, said Wednesday it is going public via a merger with special purpose acquisition corporation Norther Genesis Acquisition Corp. II , in a deal with a pro forma implied enterprise value of about 4.55 billion. Over the last five years, Embark has operated Americas longest running road-testing program for self-driving trucks to refine the companys sophisticated self-driving software -- purpose-built to navigate Class 8 trucks on long-distance freight trips, the companies said in a joint statement. 