First up - the Peugeot Lanius by F@bz:
The inverted tires and plenty of large curved elements contribute to the streamlined shape. And it's not just the outside that's detailed: there's a full interior and engine to be seen in this Flickr album. Take a look!
The second future car comes is a McLaren-inspired model from Peteris Sprogis:
The color scheme is similar to F@bz's car, but this one has an icier feel with the spikes and trans-light-blue higlights. Plus it's a two-seater!