Here's the RipStik Caster Board. Or like my brother the ER traumatologist likes to call it: "BUSINESS!" For
$200 $99 you will be able to carve that asphalt using this skateboard with a central flexible articulation system and just two wheels. According to their web page, it behaves like a snowboard and magically "accelerates and turns without pushing."
By the way, the video has no sound because I wanted you to save from the extremely annoying QVC-style voiceover. [RipStik Caster Board]