"In motion" means it is something that is moving.
A car can be fast but not moving just at the moment. Something can be moving right now but not be very fast. The copywriter is assuring you that Metro has both desirable qualities.
Metro is an abbreviation of metropolitan, meaning "having to do with a large city" and also describes the subway system of Paris and some other cities, including the one that services Microsoft's home state. The Metro in Paris is fast, efficient (at least when I've ridden it) and a model of public transportation.
The copywriter wants you to feel something positive about the product. Are the words superfluous? Probably to the extent that all advertising seems superfluous to someone who does not wish to be sold a product. But to the extent that people read advertising uncritically, probably they make the right impression.