the V12 Laraki hand crafted engine, and the D9T, made by many craftsman, and it's designer/artist, Eric Van Hove. Made of bone, wood, ebony, malachite, silver, and other materials

http://www.wowsai.com/zixun/12872-7-1.html

http://www.hamofa.be/userfiles/useruploads/images/eric_van_hove_-_hamofa_2.jpg

which was just on display in an art gallery, Jaffe-Friede Gallery, Hopkins Center, Dartmouth College in New Hampshire     http://hoodmuseum.dartmouth.edu/explore/exhibitions/eric-van-hove

artist Eric van Hove, who recreated a model of the Caterpillar D9T engine that killed the American activist Rachel Corrie. The young activist was part of a pro-Palestinian group and was killed by an Israeli Defence Forces bulldozer in the Gaza Strip in 2003. “Political art should not forsake beauty,” said Fadda, and this work is a prime example: the engine replica, while conceptually loaded, is undeniably beautiful, covered in intricate, decorative patterns.
http://www.artslant.com/9/articles/show/45400

http://diptykblog.com/blog/2016/02/24/biennale-de-marrakech-les-coups-de-cur-de-marie-moignard-au-palais-bahia/

For about a year, the artist is going to achieve by forty Moroccan craftsmen all 465 parts of the engine, but every line is handcrafted, using materials and techniques to craft each of them. Thus do we find in this new version of wooden rods, gears carved horn or bone, braided leather hoses, glazed ceramic casings, elements in hammered steel, yellow or red copper finely carved and decorated, etc., in the image of these objects, jewelry or furniture whose typical bill Maghreb is the joy of tourists.
http://www.paris-art.com/marche-art/v12-laraki-/eric-van-hove/7954.html

Creativity has no bounds and it can come in form or shape. And this time around it comes in the form of a Mercedes V12 engine made from copper, bone and 50 odd other materials. Made by Belgian artist Eric van Hove with help from 35 other master craftsmen from Morocco, this masterpiece took almost 9 months to complete and is called as V12 Laraki. It all started by first dismantling a real Mercedes V12 engine, which by the way in itself is quite a difficult and pain-staking task. Thereafter Eric along with his accomplices set out on replicating each and every part of the real thing with his own version of strange material choice. Apart from that, don’t be flabbergasted if I tell you that it consists of 465 hand-made parts and 660 cast-copper bolts. http://www.damngeeky.com/tag/eric-van-hove

http://www.mottodistribution.com/shop/v12-laraki.html

http://www.automobilemag.com/news/organic-engines-speaking-with-artist-and-sculptor-eric-van-hove/