The Armadillo was a custom built 16-wheeler bullet-proof truck owned by Otto's Private Army.
History
F9
After sending a satellite into orbit, Otto and Jakob Toretto moved through the streets of Tbilisi in the Armadillo as they awaited for the satellite uplink with Project Aries to upload. Dominic Toretto and Ramsey needed to get into the Armadillo to cancel the upload and Mia, Han and Letty work to wipe out the convoy to clear the way for them.
In the truck, Otto told Jakob about an error with the upload and so Jakob climbed onto the roof of the truck to fix it. However, this was revealed to be a ruse as Otto intended to double cross Jakob as he has now joined forces with Cipher. Otto sent his right-hand man, Sue, to finish Jakob off but Letty was able to stop him by magnetically throwing a BMW at him which Dom then pushes under Jakob to break his fall.
With the path cleared, Dom and Ramsey boarded the Armadillo and although they were too late, Roman and Tej were able to interrupt the upload by destroying the satellite in space. Soon after, Cipher flew in on a jet and starts firing rockets. She blew up the truck but only killed Otto as Dom was able to jump out of the Armadillo, causing it to ricochet into Cipher's jet, destroying it (although it is revealed that she was piloting the jet remotely and she is able to escape again). The Armadillo was destroyed as a result of the explosion.
Specifications
The Armadillo stands 14 feet high, weighs 26 tons and took four months to build. Vehicle supervisor Alex King worked with production designer Jan Roelfs to engineer and custom-built two versions of the Armadillo. King said in the film's production notes "The Armadillo, or as I've always called it, the Mother Trucker, is the biggest on-screen vehicle I've ever seen and certainly that I've ever built."
Images
References