this was suggested a couple of times but but never on the official suggestions area the idea is that you could connect two nodes together using a rope by clicking one and then another one (presumably on another vehicle) to attach them together (with a rope) oh and if you do end up adding that feature, a tow truck could work with a rope pre-attached and it can attach to the node of the frame (or that thing you connect to to tow a vehicle)
YES, was about to post this suggestion too. Also, maybe having other options with different physics like chains, rubber bands...
I see no one likes crash prevention in BeamNG.Drive (lol) http://www.beamng.com/threads/front-auto-crash-prevention-auto-braking-system.21926/
Maybe just choose 2 nodes and have the game automatically add in a "rope" or something similar. I actually came to the suggestion page to suggest this same idea. DEVS PLEASE ADD <3