Found this interesting article today on Popular Mechanics online about the technology behind Amish Buggies. The buggies being built today are far superior to the ones built even 50 years ago. Some buggies are fully enclosed, have torsion suspension, disk brakes, windshield wipers, and propane cab heaters. These are all built to custom order out of fiberglass, aluminum, oak, fabric, etc… Cool stuff.
Check out the article here:
http://www.popularmechanics.com/cars/technology/a24666.c0oSld/how-the-amish-build-a-buggy/?click=mvtest