Summary: According to XCOR's website, the Lynx is a "two-seat,
piloted space transport vehicle will take humans and payloads on a
half-hour suborbital flight to 100 km (330,000 feet) and then return
safely to a landing at the takeoff runway.
Like an aircraft, Lynx is a horizontal takeoff and horizontal landing
vehicle, but instead of a jet or piston engine, Lynx uses its own
fully reusable rocket propulsion system to depart a runway and return
safely. This approach is unique compared to most other RLVs in
development, such as conventional vertical rocket launches and
air-launched winged rocket vehicles “dropped” at altitude from a jet
powered mothership."
2013