Who can identify this 1960's European Three Wheeler?

[WebPilot]

"The unique tilt mechanism that allows the two front wheels to function independently is
composed of four cast aluminum arms, with four hinges fixed to the central tube. Two guide
tubes are on either side of the parallelogram, connected to the arms via suspension pins and ball
bearings."

[WebPilot]

[WebPilot]

"The MP3 500's torque curve enables strong, smooth acceleration with
plenty of power available at low and mid-range revs."

[WebPilot]

[WebPilot]

 "Unique wheel design suited to the diverse terrain of
America's highways and byways."

[WebPilot]