If you have a Generation III Prius (2010-present) with 15 inch wheels, you can pop off the UGLY wheel covers to release the alloy beasts underneath. Except - you'll have a hole in the center of the wheel that begs for a decorative cap. These are based on precise measurements of Toyota part #42603-52110.

This has the iconic power symbol embossed in the top of the wheel cover, just like the power button in your Prius. More info: en.wikipedia.org/wiki/Power_symbol

Also fits Yaris, Vios

Photos: http://www.flickr.com/photos/theschlem/sets/72157632696775253/with/8449866372/

Nylon is NOT UV stable. For maximum longevity and downright good looks, you will want to paint this object. Acrylic paints with a glossy topcoat are a proven method of painting objects printed using Selective Laser Sintering.

Shapeways has a tutorial here: http://www.shapeways.com/tutorials/painting3dprintedsls And a blog entry here: http://www.shapeways.com/blog/archives/129-painting-your-3d-printed-models.html

Further, you can locate the recommended Tamiya paints here: http://www.tamiyausa.com/dealers/index.php