Source: http://www.alstom.com
The AGV is based on three main technologies which have been combined for the first time: articulated carriage architecture, a distributed drive system and synchronous permanent magnet motors. All three contributed to the performance of the train which set the world rail speed record of 574.8 kph on 3 April 2007.

Designed for a commercial speed of 360 kph, the AGV uses an articulated architecture which gave a major technological advantage to the TGV. This involves positioning the bogies (axles and wheels) between the train carriages, contrary to their traditional positioning under the carriages. (less info)