to harness / to draw (a cart etc) / to drive / to pilot / to sail / to ride / your good self / prefixed word denoting respect (polite 敬辭|敬辞[jing4 ci2])
驾
=
加
+
马
:
Today the unicorn (马) is going to pilot (驾) a plane for the first time. As it gets ready in the ashram's bathroom (a4), Joan of Arc (ji) is cheering waving with her pom poms (加).