I think I want to see the Equestrian semi-trucks and truckstops...
There was at least one semi truck we've seen. Here it is
Image.
It even happens to be the same trucking line "Hauling Dash" that we see in the new episode this week! Wow! That is pretty cool. The truck is clearly American based and seems like a mix of Kenworth, Peterbilt, and maybe some Western Star?