Here are two concepts that are absolutely neat. The first is the Naro car, which is a four wheel two seater. The seats are in tandem and the riders are seated higher than a car, eye height is the same as a Honda Blackbird and the width is just enough to enclose the mirrors of the same bike. Because it is high and narrow, it must lean in the turns like a motorcycle. Several different power options are being considered but this looks like it may make it to production in a reasonable time frame. The designer is a motorcyclist and rides a Blackbird so those dimensions seemed about right to him.
The next is the Aprilia Magnet powered by an Aprilia 550cc V twin. It has three wheels, a seating position similar to a Formula One race car and extreme performance. This is more concept than production ready but it looks very cool and well thought out.