One of the great living gouache painters is Michael Turner of Britain, known for his motorsports and aviation artwork.
He painted the official posters for the Grand Prix of Monaco, Sebring, LeMans, Nürburgring and other Grand Prix events.
With gouache, he captures the ornate overlapping detail of the crowds and the far architecture, while conveying the motion blur in the foreground, as if the camera is tracking along with the action.
Michael Turner on Wikipedia
Thanks, Robert H.