Hard board
PVC Board
Plaplate
Putties
Etc.

This custom Batmobile is huge, it stand 11' tall and 23' long.

This is the largest Batmobile ever, easily straddling a three lane highway. Batman mentions how he "modified it during some nasty riots" 15 years prior, and that the only thing that can damage it "isn't from this planet." It easily shrugs off gunfire, grenades, and rocket launcher attacks, and offers its own array of heavy weaponry. In addition to its offensive capabilities, this Batmobile is equipped with an extensive medical bay (Source: Dark Knight Returns Wiki)

This is not 100% my custom, I got helped from another customizer specialized on diorama & Replica Vehicles.. Heru Maulana. Thanx soo much braddah