your talking about vaneer's, yes it is plastic on stuff like ikea furniture, but if you want it to look GOOD, you want real veneer, which is actual wood, sawed super thin... veneer is good for things like steering wheels.... but in a jeep, its a little bit fragile...
if you do get into fiberglass (doesnt look likely), be advised theres a lot of start up costs, your first stuff will look like crap unless you are very lucky... the health concerns are very serious, wear a resp. at ALL times. youtube has great how-to videos most are very well done! the only thing you should ignore, is when they arent wearing their respirators.
im no expert on fiberglass, but if anyone has questions feel free to pm me.