The Terrafugia would not be possible without a couple of exemptions. A
safety regulation waiver from the US Federal Aviation Administration
allowed the Terrafugia to use light motorcycle tires and wheels, helping
to keep the vehicle's weight down to 1,320 pounds (598 kg). Another
waiver permitted sturdier windows. With a top flight speed of 138 miles
per hour 222 kmh), the Terrafugia needs these advanced windows to
withstand high-speed impacts with birds. The following YouTube video
from the
Terrafugia website demonstrates a pilot driving and flying the Terrafugia.
The
New York Times article also described PAL-V, a 1,500-pound
(680 kg) cross between a motorcycle and a helicopter. On the road, the
PAL-V tilts into curves. In the air, a rotor and propeller let it fly.
European officials already approved this two-seater vehicle for driving
and it is awaiting approval for flying. A proof-of-concept flight looked
promising; the YouTube video from the
PAL-V website below shows the PAL-V in action.
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