The price point is fantastic on the Slingshot ... The rear just doesn't look finished.
The Morgan is a nice 3 wheeler also, my choice as many of you know is the Kawasaki 1200cc powered Campagna T-Rex's built from 2003 - 2006. OVER-priced for what you get, however it's a lot of fun. I have owned 3 and my favorite was the early 2005 model. I also hit a large raccoon riding the T-Rex, killed it and it cracked a portion of the nose fiberglass.
If you are interested in a 3 wheeler ... you can pick up a low mile 2003-2006 T-Rex for around $30K-$36K, slightly more $$$ then a Slingshot, but a lot more fun and a beautifully designed machine.
I do see these slingshots everywhere, they are definitely popular. I have also owned a the Can Am Spyder RTS. The Can-Am also generated a lot of heat around my legs and feet. You could hear the gasoline gurgling inside the fuel tank at times from the excessive heat.