These two figures show the internal waves at Dongsha Island on April 23, 2010, as seen by the radar on TerraSAR - X in
its conventional mode of operation (left) and in the experimental new mode that permits direct velocity measurements (right), with the measured surface velocities shown in color.
One label is for extended - range electric vehicles, like the Chevy Volt, with two
modes: all - electric and gasoline - only; and a second label for blended
mode that includes a combination
of all - electric, gasoline and electric
operation, and gasoline only, like a
conventional hybrid vehicle.