It almost looks like the cheap recycled HDPE sheets. The multi-colored version of the white plastic sheets that people use for cutting boards and such. It would certainly be easy to keep clean, except that it tends to expand under heat, does not weather well, does not bond well, and last but certainly not least - is somewhat flammable.
If you are wanting a good looking engine compartment I think this looks better than 99% of the rest out there. Except, these cars are built within the 1%, so the consumer should expect better IMO.
Hey Lamborghini.... You're doin it wrong!!!!