“Rav Soloveitchick actually preferred the use of machine-baked matzot-shemurot to the traditional hand-baked version.
The risk of hand-baked matzot becoming chametz has not changed fundamentally in the past 3,000 years.
However, technological progress has resulted in a baking process that leaves almost no possibility of machine-made matzot becoming chametz.”
SOURCE: Rabbi Aharon Ziegler, The Jewish Press, 2009 March 27, page 31.