The casting of the plastic (not sure what type) is strong but brittle compared to ABS. Actually cracked a piece off the upper hull latch mechanism removing the upper hull.
The material also strips out with more than moderate screw tension, so be careful.
Even the instructions warn against heavy driving as the material is not as resilient as ABS.
All-in-all I am very satisfied with it as the castings are very well done, precise fit and no flash, bubbles or other casting remnants.