X-Prize sub orbital spacecraft ARCA
ARCA is a privately owned company in Romania who is working hard to build a re-usable commercial space craft.
The company has already tested successfully two rockets called Demonstrator 1 and Demonstrator 2.
These rockets launch similar to NASA's space shuttle, via a traditional launch pad. One very important difference is that ARCA rocket's fuel emissions are oxygen and water, having no negative effect on the environment.