I have always loved the way the Smart cars look, and I thought it would be an interesting challenge to try and build one. The completed model is 10-studs wide and 17 studs long, matching the real car's 1.5 x 2.5 meter measurements.
The blue and grey Smart was built in 2003. In December 2004, I was commissioned by a gentleman in the UK and built the orange and black car. The client wanted me to reproduce his girlfriend's car; he gave it to her as a Christmas present.
The orange-and-black car was built as a duplicate of the client's girlfriend's car. He took photos of her car so that I could get every detail correct, from the rear license plate (which is yellow), to the grey wheels, and other specific accent colors.
The orange car was easier to build than the blue one because it is only two colors, instead of 3. The blue car has a lot of areas with thin black trim; this results in a lot more smaller pieces, and an overall more complicated construction.
Wow! That thing is great! Much better than the official LEGO one. It captures most of the shape quite well. Just a suggestion, what if you used more hinges on the grill to make it curved? Or would that make the grill to big? Of course you could stack one side of two, then put 1x2 plates to make it even. Of course, that might make it to bulky...