gotta be automatic... i remember seeing tandem trailers back in the 60's on I-70 going across Kansas and thought that was something, damn gotta be automatic... i remember seeing tandem trailers back in the 60's on I-70 going across Kansas and thought that was something, damnLots are automatic, but some are still manual.
https://www.roadtrains.com.au/tech-tips/how-to-drive-an-18-speed-roadranger/