The picture was posted alongside the caption: "The evolution of the truck is here. Guaranteed shatterproof".
The caption references a mishap at the Cybertruck's launch event. Made from Tesla Armor Glass, the side windows were designed to be bullet proof, but broke when metal balls were thrown at them to demonstrate their toughness.
After the event, Musk responded to the failed test by tweeting: "Guess we have some improvements to make before production haha."
Musk later revealed that the windows shattered because the glass had cracked when they had earlier tested the truck's doors by hitting them with a sledgehammer.
"Yup. Sledgehammer impact on door cracked base of glass, which is why steel ball didn't bounce off. Should have done steel ball on window, *then* sledgehammer the door. Next time…," tweeted Musk.
The distinctive-looking truck has an unusual angular, wedge-like body and is made from stainless steel. It was launched on 21 November at an event near the company's SpaceX factory in Los Angeles, USA.
The evolution of the truck is here. Guaranteed shatterproof 😬 pic.twitter.com/RocTEkzzwI
— LEGO (@LEGO_Group) November 27, 2019
Lego's brick version of the Cybertruck is part of a social media storm created by the launch of the much-anticipated electric truck from Tesla. It has divided opinion with some people calling it "courageous" while others think it is "ridiculous".
Dezeen commenters had equally strong opinions, with Martin Zborovjan saying: "Really bold. I like it. People laughed at iPhone too, remember? I am not a truck fan, but would buy this one".
However, Alan Smith said: "Beyond ridiculous! A pick-up is meant to be a practical, rugged vehicle. What this thing is or is meant to be is a mystery."
Tesla says the Cybertruck will go into production in late 2021. It is the latest electric vehicle unveiled by the company, which was co-founded by Musk.
In 2017, Tesla unveiled the the Model 3 car, which it described as the "first mass-market electric vehicle". Since then, it has revealed designs for electric trucks and released its "safest" all-electric crossover SUV earlier this year.
Image courtesy of Lego.