First had a technical phone screen. After moving forward, the recruiter gave me a call to go over how the on-site would be like. She was very thorough.
Once at the on-site, there were three or four interviews with a lunch in between with the team. They were fairly social and friendly with one another. Also did a demo of their trucking system (not actually drive it but footage and controls).
They had a company board game group that met up every so often outside of work. The CEO was very personable and down-to-earth.
They left a very good impression overall.