If you are slipstreaming keep an eye on what's behind you, the one thing you don't want to be is the meat in a 88 Tonne artic sandwich.
I had an example of how much damage trucks do last year on the M6
I was in my Iveco pickup towing a trailer so no outside lane
M6 just before j6 northbound, middle lane doing about 20mph as there'd been a crash on the A38M so there was a long queue in the inside lane.
In front of me a skip wagon probably 17T with 2 skips one on top of the other full of sawdust.
I was about 15m behind him when I heard a loud bang and he started rolling back, I hit the horn but he just kept coming until my truck stopped him
when I got out he'd run into the back of an artic, the rear doors of the artic trailer had crushed the cab trapping him inside
Another driver blocked the outside lane so we could get him out but the doors were jammed, it took the fire brigade and a hydraulic cutter to get him out
I was there for about an hour, turns out he was really lucky as he walked away but the truck was a write off.
the 2 skips had slid forward snapping the lifting gear off as they went and hitting the back of the cab
this was a 20mph crash, If he'd been doing 5mph more I think he'd be dead, if a car had been between them I think they would have been dead
Motorways are dangerous places, it's only when you witness a low speed impact like this it brings home the amount of damage trucks can do