He says the ⓐrocketplane would take off and land at existing airports, making it much easier to use than ⓑthe space shuttle which has to glide onto special landing strips.

 How can the rocketplane use a normal runway when current space launches require massive rockets and disposable fuel tanks? ⓒThe plane would take off using regular jet engines, just like any other commercial flight. But at 10,000 meters ⓓit would meet a big tanker, maybe 747, which would transfer liquid oxygen stored at -190 degrees Celcius to ⓔit.