In article ,
"Keith Willshaw" wrote:

The problem is that merely reaching the altitude is only a
part of the problem. The real issue is achieving orbital velocity

No, it's not.

http://www.xprize.org/teams/guidelines.html

"3. The flight vehicle must be flown twice within a 14-day period. Each
flight must carry at least one person, to minimum altitude of 100 km
(62 miles). The flight vehicle must be built with the capacity (weight
and volume) to carry a minimum of 3 adults of height 188 cm (6 feet 2
inches) and weight 90 kg (198 pounds) each. Three people of this size
or larger must be able to enter, occupy, and be fastened into the
flight vehicle on Earth's surface prior to take-off, and equivalent
ballast must be carried in-flight if the number of persons on-board
during flight is less than 3 persons."

--
cirby at cfl.rr.com

Remember: Objects in rearview mirror may be hallucinations.
Slam on brakes accordingly.